488 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



from the stem, wliich is in a straight line mth the lower branch; 

 upper branch of media simple; cell between media and cubitus 

 strongly contracted apically (toward wing margin); anal present; 

 costal cell large. The apical part of the wing is obhterated in the 

 type. Among Scudder's Florissant genera this falls closest to Schizo- 

 neuroides, but is easily distinguished by the great distances between 

 the bases of media and cubitus. 



Genotype. — ScTiizoneurites hrevirostris, new species. 



SCHIZONEURITES BREVIROSTRIS, new species. 

 Plate 63, fig. 7. 



Length about 1.2 mm., anterior wing about 1.4 mm.; beak stout 

 200 fi long, the comparatively slender terminal joint 53 fx long; wings 

 clear, with dark veins; distance from base of cubitus to base (origin 

 from radius) of media about 384 /x; origin of media to origin of radial 

 sector about 160 ju; origin of media to fork 112 ju. 



OUgocene at Gurnet Bay (Brodie). Lacoe Coll. 7542. 



Holotype.—C&t. No. 61428, U.S.N.M. 



DIPTERA. 



CULEX PROTOLEPIS, new species (Culicidae). 

 Plate 62, fig. 1. 



Represented by the apical half of a wing, with portions of the 

 abdomen and the thorax. The specimen is remarkable in that it 

 preserves the hnear wing-scales, which appear Hght ferruginous and 

 exactly Hke those of modern Culex. The venation, made out from 

 the rows of scales, is as in modern species. The fork of the second 

 vein (base of second marginal cell) is 672 p. from apex of wing and 

 480 fj. from base of submarginal cell, at which point the second vein 

 is distinctly bent. The width of the wing at level of base of sub- 

 marginal cell is about 830 /x. The species is readily known from C. 

 petrifactellus by its larger size. 



Oligocene at Gurnet Bay (Brodie). Lacoe Coll. 7551. It thus 

 appears that in the structure of the wings, at least, Culex was fully 

 developed as far back as the Lower Oligocene, and has not progressed 

 since that time. Another specimen, representing a larger species, is 

 placed on record because it shows the proboscis, antennae, etc., 

 although the wings are not preserved. 



Holotype.—Cat. No. 61429, U.S.N.M. 



CULEX PROTORHINUS, new species. 

 Plate 62, fig. 2. 



Male. — Shows the thorax, head, and abdomen in lateral view; the 

 end of the abdomen and most of the head destroyed. Parts of the 

 plumose antennae show that these organs were fuUy developed in the 



