[Read before the Wellington Philosophical Society, April 27, 1938; received by the Editor, April 30, 1938; issued separately, December, 1938.]

The genus Lepidosira Schott contains six species, five of which were described by Schott from Australia (4) and Sarawak (1), and the sixth from New Zealand described by Womersley. The present paper adds seven more species to the genus, all from New Zealand, and introduces a new genus Urewera related to Lepidosira and containing, so far, five species and three sub-species new to science.

In studying the Lepidosira-like Collembola of New Zealand it quickly became evident that there existed a number of forms which could not be definitely placed in that genus; and it is to receive these that I now propose the new genus Urewera.

Collembola—Arthropleona.

Family Entomobryidae Börner.

Sub-family Entomobryinae Börner.

Tribe Entomobryini Börner.

Genus Urewera nov.

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Genotype Urewera fuchsiata n.sp., slide 3/82 Dominion Museum Collection.

This genus is characterised by the development of what can only be described as two accessory claws to the foot. These structures are not pseudonychia, but small accessory or secondary claws, each arising independently from the base of the foot above the base of the claw, one on each side, on all feet. In position they are more dorso-lateral than lateral, passing downwards along the sides of the claw, generally with a gentle outward curve, and reaching to from one-quarter to almost one-half of the length of the claw. (Plate 35, figs. 2 and 3). These structures in Urewera must not be confused with the wing-like teeth of Pseudosinella, from which they are distinct. Specimens of Urewera do occur, however, in which the accessory claws curve inwards across the inner margin of the claw, giving it the appearance of a Pseudosinella. In describing P. magna in Trans. Roy. Soc. of N.Z., vol. 67, p. 355, I now find that I made this error in observation and that this species must now be washed out and incorporated in the genus Urewera (spec. tridentifera). There always is a single tenent hair, distally clubbed, to each foot. The scales of Urewera generally are lightly pigmented, oval in shape, and always heavily and prominently striated, the striations appearing as rows of short dark lines. On closer examination these striations can be seen to be

rows of short thick spines projecting from the surface of the scale at a very low angle. On scales in the posterior region of the body the spines often are longer and project at a greater angle. They give the edges of the scale a broken or “feathered” appearance.