E. T. CRESSON, JR. 51 



HEMITELOPTERYX new name 



1902. Hetcroptcryx Hemlel, Abth. K.-K." Zool.-Bot. GeselL, Wien, ii, 81, 

 (nee Gray, 1835). 



In our fauna, this is a genus of slender flies, with the frons 

 velvety black excepting a shining median stripe. Second an- 

 tennal joint short; third much longer than broad, with broad 

 apex; arista densely, short, black plumose. Scutellum with but 

 two bristles. Propleural bristle wanting; meso- and pteropleura, 

 ])are. Wings short, narrow; apex broadly rounded, the margins 

 and veins straight and parallel. First vein ending in the costa 

 beyond the small cross-vein. 



There is only one, the following, species known in our fauna, 

 which appears to be congeneric with the European Heteropteryx 

 brei'ipennis Zetterstedt, although differing in several characters 

 which may prove to be of more value than is apparent now. 

 Among these are, the longer first vein, two instead of four scutellar 

 bristles, and the densely, not loosely, plumose arista. 

 Hemitelopteryx johnsoni new species 



A striking species with its velvety black frons and facial orbits. 



a". Head and mouth-parts black; antennae entirely yellow except the 

 black arista. Thorax, scutellum and halteres tawny to yellow; mesonotum 

 with anterior margin and two broad stripes, black. Abdomen except basal 

 angles, black. Legs yellow; fore coxae white and silvery; apices of fore 

 and hind femora infuscated; fore tibiae and tarsi, black, but apical joints 

 of latter white. Wings blackish with dark veins. 



Frons opaque, velvety black, with short vertical angles and broad median 

 stripe, polished. Face with broad velvety black orbits, continuing over 

 the cheeks to the occiput; median area and oral margin of cheeks polished. 

 Pleura with silvery spots on sterno- and hypo-pleura. Length'. — 3.5 mm. 



Type. — cf ; Franconia, New Hampshire, (Slosson), [U. S. N. M.]. 



A female from Briggsville, North Adams, Massachusetts, 

 June 18, 1906, [B. S. N. H.], is evidently conspecific and agrees 

 with the male, except that the apices of the fore tarsi are also 

 black. 



RENO CERA Hendel 



1900. Hendel, Verh. K. K. Zool.-Bot. Gesell. Wien, 1, 333. 



This genus has for its type, Renocera stroblii Hendel (Hendel, 

 1902, p. 18), and may be diagnosed as follows: 



Tawny to yellow, generally opaque, flies. Median frontal 

 stripe present. Second antennal joint much shorter than third. 



TRANS. AM. ENT. SOC, XLVI. 



