No. 2313. NEW SPECIES OF EOCENE INSECTS— COCKERELL. 289 



as now appears probable in the Colorado Eocene. May we suppose 

 that it first developed in America, and subsequently extended to 

 Europe? It is richly developed in the modem American fauna. 



Family HYDROPTILIDAE. 



HYDROPTILA (sens. latiss.) PHILEOS, new species. 



Plate 32, fig. 6. 



Male. — Length, 3.5 mm.; anterior wing, 3.9 mm. long and nearly 

 1 mm. wide; posterior wing, 3 mm. long and about 0.9 mm. wide; 

 width of abdomen about 1 mm. Antennae far (about 400 fx) apart, 

 about 50 fi thick, much shorter than wings. Dark broMTi, the 

 wings uniform pale sepia, hairy. 



Eocene (Green River) shales, ''Cathedral Bluffs south of Little 

 Tommies Draw at point vv^here samples were taken" (Winchester, 

 17-5.) Colorado. 



Eolotype.—C&t. No. 66553, U.S.N.M. 



At first sight this seems to resemble some small Rhyacophilid, 

 such as CMmarrha aterrima Hagen; but the wings, while not exces- 

 sively narrow, are pointed at end, as in the Hydroptilidae. On the 

 other hand, the end of the abdomen is almost exactly like that of the 

 amber species RhyacopMla profusa Ulmer, and is not like that of any 

 living or fossil HydroptUid knov,^n to me. The wings are distinctly 

 more pointed than m R. profusa, and except for being less elongated, 

 have nearly the outline of those of Agraylea spathifera Ulmer. It 

 is therefore somevv'hat uncertain whether the insect is really a Rhya- 

 cophilid or a H3^droptilid. It very possibly represents an extinct 

 genus, but as the venation can not be seen, it is difficult to define it. 



HOMOPTEPwA. 



Family FULGORIDAE. 



HAMMAPTEJIYX (?) LEProoroES, new species. 



Plate 32, fig. 7. 



Anterior wings about 16 mm. long and 8 broad; costal margin very 

 gently arched, except toward the base, where it rapidly descends; 

 apex very obtuse; outer margin gently convex; costal field dilutely 

 bro\\Tiish, apical and outer margui fuscous to a depth of about 2 mm., 

 excepting a small hyaline apico-marginal spot; in this field the veins 

 appear colorless on a dark ground ; and the dark area (except toward 

 the anal angle) includes the outer series of transverse veins (which 

 are about 1.3 nun. from the margin), which circle aroimd the apical 

 field and appear to become continuous with the subcosta; subcosta 

 at about 7 mm. from base of wmg or tegmen running very slightly 

 over 1 mm, from costal margm; veinlets reaching the margin very 



