244 DIPTERA OF NORTH AMERICA. [PART IV. 



darker at the tip. Abdomen blackish ; male forceps likewise. 

 Wings with a slight grayish tinge ; the marginal cross-vein is 

 inserted a little before the middle of the petiole of the first sub- 

 marginal cell. 



Hob. Washington, D. C. ; Maryland ; early in the spring, near 

 running water. I have had six males and three females. 



Gen. XXXII. CLADOLIPES. 1 



A single submarginal cell ; three posterior cells ; no discal cell ; subcostal 

 cross-vein near the tip of the auxiliary vein. Tibiae with spurs at the 

 tip ; empodia distinct ; ungues smooth. Eyes glabrous ; front convex, but 

 without projecting gibbosity. Antennae (in the female) 8-jointed. Ovi- 

 positor very long, narrow, pointed, somewhat arcuated towards the tip. 



This genus (which I have not seen) has been established by 

 Mr. Loew, in 1865 (in the article quoted above on page 240, in 

 the foot-note), upon the female of a species from Greece. It 

 differs from Anisomera in the absence of the fork of the second 

 vein, and, consequently, the presence of only one submarginal , 

 cell. The antennse of the female resemble those of Anisomera 

 in being without verticillate hairs. Although, in an artificial 

 arrangement, Cladolipes would have to be placed among the 

 Tipulidse with a single submarginal cell, it is evidently related 

 to Anisomera. 



Cladolipes simplex Loew, the species alluded to, is of the 

 size of an ordinary Anisomera and altogether blackish, including 

 the wings. 



Gen. XXXIII. ERIOCERA. 



Two submarginal cells ; four, sometimes five posterior cells ; a discal 

 cell ; the subcostal cross-vein a short distance back of the tip of the aux- 

 iliary vein ; the first submarginal cell shorter than the second. Tibiae 

 with spurs at the tip ; empodia distinct. Front with a more or less strik- 

 ing gibbosity behind the antennae ; antennae 6-jointed in the male, some- 

 times enormously prolonged, sometimes not much longer than those of the 

 female ; antennae of the female ten-jointed, comparatively short. Male 

 forceps with a pair of elongated, subcylindrical basal pieces, each bearing 

 two appendages, one of which is claw-shaped, horny ; the other coriace- 

 ous, blunt (Tab. IV, fig. 29, forceps of E. spinosa; fig. 28, that of E. 

 fuliginosa) . 



1 From nXatioi;, a branch, and X£jV», I omit. 



