Index to Lettering of Plates.

• A.—anal vein.

• ac.—anal cercus.

• ae.—aedagus.

• anep.—anepisternum.

• apc.—apical cell.

• apm.—anepimeron.

• ar.—areola.

• ax.—axillary sclerite.

• bas.—basareola.

• bc.—basicostal sclerite.

• bcl.—basicubital sclerite.

• bls.—blood sinus.

• bp.—basal pad of interstitial cells.

• br.—basal ring.

• C.—costa.

• cd.—cardo.

• cln.—colon.

• clp.—clypeus.

• cm.—circular muscle.

• cr.—crop.

• cu.—cuticle.

• Cu.—Cubitus.

• ex.—coxa.

• ed.—ejaculatory duct.

• ep.—epithelium.

• ephy.—epipharynx.

• eps.—episternum.

• fc.—fibrous layer.

• fd.—fold in wing.

• fe.—follicular epithelium.

• ga.—galea.

• gl.—glossa.

• glr.—glandular ridge.

• hg.—hind-gut.

• hm.—hammulus.

• il.—ileum.

• ktm.—katepimeron.

• kts.—katepisternum.

• lat.—lateral area.

• lb. plp.—labial palp.

• lc.—lacinia.

• lm.—labrum.

• lms.—longitudinal muscle.

• ltc.—lateral cervical sclerite.

• M.—media.

• m.—micropile.

• md.—mandible.

• mes.—mid-gut.

• meso.—mesosternum.

• mlp.—malpighian tubule.

• mp.—middle pleural area.

• mpl.—median plate.

• mpm.—mesepimeron.

• mps.—mesepisternum.

• mtps.—metapostscutellum.

• mts.—metascutellum.

• mtsc.—metascutum.

• mx. plp.—maxillary palp.

• nc.—nutritive cells.

• ns.—nutritive stalk.

• od.—oviduct.

• oc.—oesophagus.

• oeinv.—oesophageal invagination.

• ooc.—oocyte.

• ov.—ovariole.

• ovm.—ovum.

• pa.—parapenis.

• pet.—petiolarea.

• pgl.—paraglossa.

• pgr.—peritrophic groove.

• ph.—pharynx.

• plg.—palpiger.

• pls.—pleural suture.

• pm.—paramere.

• pmb.—peritrophic membrane.

• pr.—pronotum.

• pres.—prescutum.

• prmt.—prementum.

• prp.—parapsidea.

• prps.—parapsidal suture.

• prpt.—prepectua.

• prs.—prosternum.

• pscl.—parascutellum.

• ptc.—prepectal carina.

• pvent.—proventriculus.

• R.—radius.

• rect.—rectum.

• rectg.—rectal gland.

• rect. v.—rectal valve.

• rgr.—regenerative cells.

• sa.—sagitta.

• sc.—scutum.

• scl.—scutum.

• scv.—scutellar fovea.

• sp.—spiracle.

• spa.—spiracular area.

• spc.—spermatocytes.

• spg.—spermatogonia.

• spgl.—spermathecal gland.

• spm.—sperms.

• spt.—spermatheca.

• sptd.—spermatids.

• smt.—submentum.

• st.—stipes.

• tf.—terminal filament.

• tg.—tegula.

• tr.—trabeculae.

• trm.—tranverse muscle.

• ts.—testis.

• v.—valvula.

• vd.—vas deferens.

• ve.—vas efferens.

• vf.—valvifer.

• vg.—vagina.

• vm.—vertical muscle.

• vo.—volsella.

• vs.—vesicula semiualis.