Dec, 1918] Nearctic Species of the Genus Laphria 161 



but the size is somewhat different {ceatus is 6 to 8 Hnes) and the 

 geographical distribution does not encourage identification of 

 the two. If Walker's remark "thinly clothed with hairs" 

 applies to the abdomen of L. ceatus there is no question that 

 aimatis is a distinct species. Until the type of ceatus is studied 

 or at least until topotypic material is seen, it is better to use a 

 new name. In various collections no fewer than 5 different 

 species have been found wrongly labelled as ceatus. The most 

 important point that has been overlooked in making these 

 determinations is Walker's statement that the abdomen is 

 "ferruginous * * * * clothed with ferruginous hairs." 



Laphria sadales Walker. 



Laphria sadales, Walker, Francis. List of the specimens of Dipterous Insects 

 in the collection of the British Museum, 2, 1849, pp. 378-9. (New York.) 



Laphria piibescens, Williston, S. W. Trans. Am. Ent. Soc. 11, 1884, p. 32. 

 "(Washington Territory and Mt. Hood, Oregon.) 



Mystax black; decumbent pile at sides of face, beard and coxal 

 hair, silvery white ; areas bearing this pile and an oblique ellipse on each 

 antero-lateral face of thorax, gray pollinose. Fine short pile of thorax 

 and abdomen golden; in some specimens rather grayish on first and 

 second segments especially at sides. Femora and tibiae yellowish or 

 reddish with whitish to golden hairs and black bristles ; remainder of legs 

 black. Wings fumose, paler toward base. Hypopygium reddish to 

 black; forceps curved as seen from above, inner apical process, short, 

 pale, striate, slightly surpassing end of forceps. (Fig. 13). Length 

 9-16 mm. 



Specimens examined: White Mountains, N. H. Morrison, 

 (U. S. N. M.); Mt. Washington, N. H., Geo. Dimmock, (U. S. 

 N. M.); Franconia, N. H., Geo. Dimmock, (U. S. N. M.); 

 Rutland, Vt., Aug., 1916, Chittenden, (Hine); Axton, N. Y., 

 June, 1901, A. D. MacGilhvray, (Hine); Nicolum River, 

 Hope, B. C., July 13, 1906, (Hine); Hope Mts., B. C., July 27, 

 1906, R. V. Harvey, (Hine); Kaslo, B. C., May 30, June 1, 

 H. G. Dyar, (U. S. N. M.); Washington Territory, (Kans. 

 Univ.); Olympia, Wash.. (U. S. N. M.); Pullman, Wash., 

 July 6, H. E. Burke, (U. S. N. M.); Mt. Hood, Ore., H. K. 

 Morrisson, (U. S. N. M.); Fieldbrook, Cahf., May 29, 1903, 

 H. S. Barber, (U. S. N. M.); Humboldt Co., Cahf., June 14, 

 H. S. Barber, (U. S. N. M.). 



