than antenor lobe across eyes, sides nearly straight, disc above nearly flat. Eyes small, nymphoid, distantly separated both above and beneath, only slightly projecting. from above each onlv about ¼ interocular space, each with about 10 ommatidia. Ocelli scarcely elevated. placed near anterior margin of posterior lobe. Antennae considerably shorter than head and pronotum together; first segment shortest, others subequal. Rostral segment III more than twice as long as II, IV considerably longer than II. Pronotum unarmed, nearly flat; the anterior transverse impression well formed at sides, weak in middle; posterior transverse impression obsolete, represented by two shallow lateral foveae, absent in middle, not demarcating a third lobe; from above, lateral margins shallowly sinuate; widest at posterior two-thirds (including pro-epimera, widest at middle), anterior and posterior margins nearly straight; humeral angles covering the hemelytral articulations. Scutellum small, about ¼ as long as pronotum and less than ½ as wide as pronotal base; scarcely raised, subtriangular, with apex rounded and not carinate or lobed. Wings vestigial in known species. Front wings reduced to short pads reaching only to base of abdomen. Hind wings reduced to short flaps. Legs: Fore legs rather strongly incrassate; front coxae oblong-conical; front coxal cavities open behind (proepimera not meeting behind them); fore tibiae considerably expanded towards apex, which is without tubercles or plate-like processes and bears a well developed pecten on anterior (inner) margin and ventrally a group of 10 strong spines, the 2 nearest tarsus apically bifid. Middle and hind legs moderately thickened, short (hind tibiae about ½ as long as head and pronotum together). Middle and hind tibiae without pectines, with a ventral apical row of 4 long spines; hind tibiae in addition with several preapical spines. All tarsi two segmented, the first segment extremely short; second segment of front tarsi with 2 pairs of ventral spines, the more basal pair the longer; second segment of middle and hind tarsi with long hairs but without spines. All tarsi with 2 claws; those of fore tarsi subequal: the inner claw of middle and hind tarsi rather longer than the outer. Abdomen with long hairs above and below; apex of ninth tergum of female with a pair of especially long dorso-lateral hairs; anal lobe short; valvulae reduced to small lobes.

Type Species. Aenictocoris powelli sp. nov.

Aenictocoris is evidently closest to Maoristolus, with less immediate affinities to Nymphocoris. All three genera show relationship to the South American Gamostolus and apparently represent three autochthonous lines derived from a common stock of southern (Antarctic or Bassian) origin. Nymphocoris retains the most primitive genitalic structure.

Aenictocoris differs from Maoristolus in the spination of the legs, particularly in the pair of bifid spines and the greater number of apical spines on the fore tibiae: the shorter and stouter legs; the vestigial wings; the reduced eyes and ocelli; the differently shaped pronotum, with the posterior transverse impression even more obsolete; the much smaller scutellum. From Nymphocoris it differs notably in the much greater number of apical spines on the fore tibiae and the presence of bifid spines; the subequal front claws; the fore wings longitudinally elongated and retaining a few veins: the differently shaped pronotum; the longer head; the larger eyes; the presence of ocelli: the relatively shorter antennae and third rostral segment; the vestigial valvulae in the female.

Aenictocoris powelli sp. nov. Fig. 20.

Known only in the micropterous form.

♀ Impunctate Body. fore-wings and legs clothed with rather long, erect and suberect hairs, longest on legs and apex of abdomen; a dorso-lateral pair of long erect hairs on anterior lobe of head above bases of antenmfers.

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Head (excluding rostrum, labrum and posterior granular “neck”) longer than pronotum (54:45) including “neck”, 59:45). Anterior lobe distinctly narrower across eyes than posterior lobe (19.5:23) and in median line twice as long as posterior lobe (36:18) (including “neck”, 36.23). Posterior lobe nearly ⅓ as wide again as long (23:18), narrowest in front (where as wide as long), gradually widening to base: sides nearly straight. Eyes very small, each with only about 10, mostly separated ommatidia. ocular area red; from above only about ⅛ as wide as interocular space (2:15.5), from below about 1/7 as wide (225.15); in side view kidney-shaped, with anterior margin strongly convex and posterior margin concave, occupying ½ height of head (10:20); from above 1/7 as long as anterior lobe. Ocelli scarcely prominent, about one ocellus-width apart. Rostrum relatively slender; third segment linear, slightly tapering toward apex, not at all ventrally incrassate, ¼ as deep in middle as long, relative lengths of segments I-IV, measured from the side, 11:10:24.15. Antennae clothed with erect and semi-erect hairs longer than width of the segments; about ¾ as long as head and pronotum together; inter-

Fig. 20.—Aenictocoris powelli gen. & sp. nov. a, ♀, dorsal (left fore wing turned aside to expose left hind wing); b, left antenna and antennifer; c, one of the two dorsal spines of apex of front tibia; d, fore leg, ♀, outer (posterior) aspect; e, apex of abdomen, ♀, ventral.

segmental membranes each with a short annular sclerite, those basad of III and IV near middle of membrane, the other close to apex of I; segments I-III nearly cylindrical, I and II narrowing to base (II only slightly), IV tapered toward apex; relative length, I-IV (excluding inter-segmental membranes and subsegments), 14:20:21:22.

Pronotum wider across basal angles than long (49:45); anterior transverse constriction obsolescent in middle; posterior constriction reduced to two widely separated, weak, lateral, oblique lines; pronotum thus imperfectly two-lobed; length, anterior lobe:posterior lobe :: 11:34; sides shallowly sinuate; anterior and posterior margins nearly straight. Scutellum broadly rounded at apex; anterior width:length :: 23:12.5.

Fore wings greatly reduced, subellipsoid; shorter than pronotum (37:45); reaching only to or near apex of first abdominal tergum. Venation nearly lacking, but the claval suture and the transverse costal fracture present, both pale. Costal margin slightly incised at the fracture, somewhat more than half-way from base; distad and particularly basad of fracture, darker than disc of wing. Anal margins of the two wings widely separated throughout their length, exposing metanotum and first abdominal tergum between them. Length:greatest width :: 37:17. Hind wings reduced to small, pale subovoid flaps, without venation; completely covered by the fore wings.

Legs Front coxae about ⅔ as long as front femora (36:55). Front femora swollen, about ⅓ as wide as long and considerably more than ½ as deep in middle as long (23:55). Front tibiae laterally compressed, with sides flattened on apical half; considerably expanded toward apex, where rather more than ½ as deep as long (23:43); apex with a cluster of 10 strong spines, in rows of 2, 3, 3, 2, the two uppermost (nearest tarsus) short and apically bifid, the others simple, the next row of 3 the longest, the others decreasing in length away from tarsus; another, more slender, ventral subapical spine shortly basad of and below the main group; inner margin with a well developed subapical pecten. Front tarsi about ⅔ as long as depth of tibiae at apex (16:23); claws subequal in length, longer than tarsus, as long as depth of tibiae at apex; basal segment very short and inconspicuous; apical segment beneath with two pairs of spines, the more apical the shorter. Middle and hind legs rather slender. Hind coxae about ⅘ as long as hind femora (45:56). Hind femora less than ⅓ as deep in middle as long (17:56) Hind tibiae as long as hind femora; dorsal margin nearly straight; ventral margin gradually and convexly curved to shortly beyond half-way, thence nearly straight; deepening beyond half-way; about 5½ times as long as deep at apical third (56:10). Hind tarsi with basal segment ¼ as long as apical segment on ventral aspect; inner (posterior) claw longer