162 Journal New York Entomological Society. [Voi. xv. 



whose extent is not easy to estimate save for him who has to deal with 

 the species, and he has made it possible to recognize the species 

 treated. I do not expect to follow the work in its generic divisions 

 or in accepting his generic types ; but that does not lessen the value 

 of the work to any one, while to one who thinks as Hampson does 

 in the matter of generic types and characters, the work is simply indis- 

 pensable. 



Class I, HEX APOD A. 



Order VI, TRICHOPTERA. 



Order XIV, CORRODENTIA. 



NEW TRICHOPTERA AND PSOCIDiE. 



By Nathan Banks, 

 Falls Church, Va. 



The following descriptions of six caddice-flies and six Psocids are 

 the last that I shall publish before the appearance of my catalogue of 

 our Neuropteroid insects. 



Order TRICHOPTERA. 



Holocentropus flavicornis, new species. 



Vertex with a large patch of long white hair, and a tuft of dark rich brown hair 

 each side ; antennae and palpi pale yellow ; thorax white-haired in the middle and a 

 brown stripe each side ; abdomen brown, tips of segments above, pale ; appendages 

 yellowish ; legs pale yellow, the hind tibiae with many long hairs, the anterior tarsi 

 somewhat dusky on the outer side. Wings brown, 

 densely mottled with whitish or pale yellowish, the 

 costal area before end of subcosta with three large dark 

 spots, apical fringe alternately brown and pale ; vena- 

 tion brown, with four whitish hyaline cross-veins ; the 

 arculus, that connecting cubitus to median, that be- 

 tween forks of median, and that from median to radial 

 sector. Hind wings gray, with brown venation, and gray 

 fringe. Expanse 12 mm. 



Several from Washington, D. C, High 

 Island and Plummer's Island, Md.; June 23 to September. Fork i 

 is present in the hind wings, as in Plectrocnemia ; but its small size 

 and general appearance is more like Holocentropus. 



