AQUATIC INSECTS IN NEW YORK STATE 465 
cinereous, front pair dusky spotted all over, spots minute and 
more obscure at costal margin, some spots larger; hind pair 
slightly spotted. Length of body 20mm. (The figure measures 
26mm); length to tip of wings about 55mm; alar expanse 75 to 
80mm. ; 
In Chile at Valparaiso and Valdivia. Blanchard said, Hsta 
especie parece rara en Chile. 
I have seen no specimens of this species, and therefore I quote 
Blanchard’s description: 
Ch. omnino cinerasceus; capite pallido-variegato; prothorace 
rugoso, linea postica pallida; alis cinereis, anticis undique fusco- 
maculatis, maculis minutis margine costali obscurioribus, non- 
Fig. 25 Fore wingof Neuromus pallidus x2 
nullis majoribus; alis posticis leviter maculatis; pedibus abdom- 
ineque concoloribus. Longit., corpor. 10 lin; enverg. alar., 30 
lin. 
Hagen afterward said his species equals C.cinerasceous 
Blanchard. 
NEUROMUS Rambur 
Adult. Color from nearly black to light yellow; usually some- 
what smaller than Corydalis adults; mandibles of male never 
elongated nor annular as in Corydalis. Cheek once or twice 
toothed or with a sharp angle. Prothorax quadrangular to 
cylindric, narrower than the head, longer than broad and shorter 
than the mesothorax and the metathorax combined. Three 
large approximate ocelli facing outward. Antennae always fili- 
form or nearly so, and usually not Jonger than the head and 
thorax combined. Medius with more than two branches 
[fig.25]; cross veins between branches of radius, from 10 to 
30, but the number is rather constant in each species; Cu, with 
one or two accessories in some species, to four or five in others. 
Larva. No published account of Neuromus larvae has ap- 
peared. They are doubtless very rare in the United States, and 
