Dec, 1918] N ear die Species of the Genus Laphria 167 



Laphria canis Williston. 



Laphria canis, Williston, S. W. Trans. Am. Ent. Soc. 11, 1884, p. 31. 

 (Connecticut.) 



Laphria dispar Banks. N. Four new species of Asilidag. Can. Ent. 43, No. 4, 

 April. 1011, p. 130. (Ithaca, N. Y., Hecton Mills, Pa.). 



Laphria dispareUa nom. nov. Banks, N. Notes on Diptera Proc. Ent. Soc. 

 Wash. 15, No. 1, April, 1913, p. 52. For L. dispar Banks not Coquillett. 



Examination of the male type of L. canis Williston regrettably 

 necessitates the above synonymy. I have a cotype male of 

 L. dispareUa Banks and the correctness of my figures of the 

 genitalia has been verified from the type by Mr. Banks. 



The type of L. canis is of a variety which I had intended to 

 describe as a new variety of L. dispareUa, but which now of 

 course becomes the typical form. 



Laphria canis variety canis Williston. 



Mystax black; decuinbent pile at sides of face silvery; coxal hair, 

 beard, in fact all pubescence of lower half of occiput grayish, of upper half 

 black. Pollinose areas as in related forms. Body thinly clothed with 

 pale pile, which on thorax appears slightly golden in some lights and 

 black in others. Thoracic bristles, except tuft in front of halteres, 

 black, the latter, pale. Scutellar bristles pale to black. Pale hair of 

 abdorren is longest and whitest on sides of segments, especially toward 

 base of abdomen; some of the short pubescence appears black in some 

 lights, especially on last segment, where some of it also is golden. Hair 

 of legs black and white. Wings slightly fumose. Hypopygium black, 

 black haired except for a tuft of pale hairs on apex of anal valve ; forceps 

 from above stout, abruptly tapering to a rounded and slightly upturned 

 apex; a view within shows that forceps is strongly hollowed out and 

 that a thin plate forms the inner apical portion between the thickened 

 apical ridge and body of forceps; from side hypopygium appears 

 unusually inflated, almost globular, forceps simple in exterior modeling, 

 its apical projection nearly straight, the margin slightly reflexed below. 

 Length 12 mm. (Description from type). 



Other specimens from which figures (Fig. 21) of genitalia 

 were taken, show variation in length from 9 to 14 mm. 



Specimens examined: Connecticut, type, (Kans. Univ.); 

 New Haven, Conn., June 4, 10, 1911, Champlain, (Walton); 

 Perdix, Pa., May 27, 1911, W. S. Fisher, (Walton); Enola, 

 Pa., June 13, 1909, (Walton); Carlisle Junction, Pa., June 22, 

 1909, W. R. Walton, (Walton); Plummers Id., Md., June 4, 

 1916, H. L. Viereck, (Biol. Survey); Virginia, near Plummers 

 Id., Md., June 7, 1908, W. L. McAfee, (Biol. Survey); Dead 

 Run, Va., July 18, 1916, R. C. Shannon, (U. S. N. M.); Glen- 

 carlyn to Mouth, Four-mile Run, Va., June 11, 1916, W. L. 



