72 NEW YO&K STATE MUSEUM 



Another larger female, probably also an O x y e t h i r a , was 

 in the sending from New Mexico, but I can say nothing definite 

 about it in the absence of the <$. 



NEOTRICHIA, NOV. GEN. 



Spurs 0, 2, 3. Ocelli present. Head posteriorly with two large 

 pyriforin warts; disc elevated with a median longitudinal line. 

 Antennae with 18-19 joints (probably in both sexes), joints 

 shorter and more subinoniliforin in the J; rather stout, ibasal 

 joint moderately long and slightly curved, second joint some- 

 what shorter, the four following subequal and cylindrical, the 

 remainder submoniliform. (Palpi uncertain from the material 

 in hand.) Legs long and slender. Neuration apparently simpler 

 than in any of the other known genera. (Compare the figures.) 



.. __>* 

 12. Neotrichia collata n. sp. 



In the g the apex of the abdomen may 'be described as fol- 

 lows: Above there is a semitransparent transverse plate, at 

 either side of which are two rather longer thin processes which 

 seem to be slightly out-turned at the apex. There are also 

 semitransparent side pieces rather slender and slightly curved. 

 The inferior appendages consist of two parallel contiguous proc- 

 esses which at the apex on their inner edges are obliquely 

 truncate and bear one or two teeth. The penis in its apical 

 portion consists of two closely-lying parts of nearly equal 

 length, slightly hooked at the tips. 



A minute and exceedingly interesting form. The figures were 

 rather difficult to obtain from the material received, but the- 

 important characters are set forth and will serve sufficiently for 

 identification. 



From New Mexico a large number of interesting cases be- 

 longing to two or probably three species have been sent. One 

 is a veritable Oxyethira, while the others belong probably 

 to H y d r o p t i 1 a , but I am not sure whether the differences 

 showrf by some of the cases are due to individual variation or 

 point to the presence of two species. 



