66 PROCEEDINGS OF THE NATIONAL MUSEUM vol, 83 



scutellum normally developed, gray pollinose; calypters semitrans- 

 parent, wliite. 



Abdomen black, the sides and apex tinged with red, with change- 

 able gray pollen on all segments, apical third to half of last two 

 shining in most views; first segment without median marginals; 

 second bearing a rather short stout pair; third with a marginal row 

 of 8; fourth with several rows of discals besides the usual marginal 

 row, intermediate segments without discals; genitalia ordinary in 

 size ; inner forceps short, united, thickened at base, tapering sharply 

 to an acute tip, yellow; fifth sternite blackish, deeply divided, the 

 lobes clothed with short, fine hairs. 



Legs black, tibiae at middle and the knees yellowish; mid tibia 

 with two large and two smaller bristles on outer front side; hind 

 tibia with four or five bristles of varying size on the outer hind edge ; 

 claws and pulvilli normally elongate. 



Wings faintly tinged with yellow along the costal margin; veins 

 bare except third which is setulose almost to small cross vein ; fourth 

 vein with a rectangular bend which bears a short appendage, beyond 

 the bend concave to costa, which it reaches about one-half the length 

 of the hind cross vein before the wing tip; costal spine not 

 developed ; epaulets red. 



Length, 8 mm. 



Remarks. — Redescribed from one male (cotype) specimen in the 

 United States National Museum from Atoyac, Vera Cruz, April 

 (H. H. Smith). 



There are a number of references to the species, as " G. furcata ", 

 from the United States; these are all subject to verification. The 

 shining black parafrontals readily separate it from hirsuta, with 

 which it seemingly has been confused. I have not seen any specimens 

 of the female. 



(14) CUPHOCERA BEAMERI, new species 



Distinguished from all other known species of this group in having 

 four sternopleural bristles. In other details the species is very 

 similar to contigua, from which it differs most essentially in having 

 the inner genital forceps laterally compressed at the base, rather 

 slender and uniformly tapering to a narrow apex, behind straight in 

 profile view with a slight median keel extending from base to tip; 

 outer forceps as usual. Front (before vertex) 0.381 of the head 

 width (one specimen), widening rapidly downward; cheek about 

 four-fifths the eye height, bearing rather coarse black hairs; back 

 of head thickly clothed with pale-yellowish hairs; front pulvilli 

 greatly enlarged, about one and one-half times the length of apical 

 tarsal segment. 



Length, 12 mm. 



Female. — Unknown. 



