160 The Ohio Journal of Science [Vol. XIX, No. 2, 



Four females are at hand which agree fairly well with the 

 above description. Williston lays stress on entire lack of white 

 pile, but a homotype (as well as the other three specimens), 

 shows some fine white pile on posterior part of thorax on 

 scutellum and on third segment, a row across posterior part of 

 segment being particularly noticeable. In one specimen this 

 row of hairs is orange red. Length 18-22 mm. 



Specimens examined: Los Angeles Co., Calif., Coquillett, 

 two females, one a homotype, (U. S. N. M.); Switzer's Trail, 

 3,500 feet, San Gabriel Mts., Calif., June 11, 22, 1910, F. 

 Grinnell, (Hine). 



There is a very strong probability that L. carbonarius is 

 based on females of one or all the species of the rapax group. 

 Only males of the latter are known, and only females of car- 

 bonarius. More specimens, and especially field work directed 

 toward solving this problem, are needed. For the present, 

 keeping the names distinct is less confusing than would be 

 uninformed lumping. 



Laphria aimatis new species. 



Mystax chiefly black in female; mixed with gray in male; face gray 

 pollinose, more so in male; general vestiture, including beard, pile of 

 thorax and legs mixed gray and black; thoracic and. scutellar bristles 

 black. Pleurae and thorax in general with a faint gray bloom, some- 

 what intensified to form a divided median stripe. First three segments 

 of abdomen and sides of others black with chiefly white pile which is 

 long at sides of anterior segments. Discal portions of segments 4-7 

 dull to bright ferruginous with golden hair; sometimes a trace of this 

 coloring on third segment, and scattered golden hairs on black integu- 

 ment. Wings smoky, paler toward base. Forceps stout, curved as 

 viewed from above; inner apical process, striate, somewhat twisted 

 longitudinallv, narrowed at apex and not attaining apex of forceps. 

 (Figs 12, 12b). Length 14-24 mm. 



Type, a male from California, Baron, (U. S. N. M.) ; allotype, 

 same data, (Kans. Univ). 



Other specimens examined: Colorado, (U. S. N. M.) ; 

 El Paso Co., Colo., June 7, 1914, Champlain, (U. S. N. M.); 

 California, Edwards, (M. C. Z.) ; Sierra Nevada, California, 

 (Kans. Univ) ; Placerville, Calif., March 12, 1913, (U. S. N. M.). 



This species agrees better than any other I have seen with the 

 description of L. ceatus Walker. (List 2, 1849, pp. 381-2 [St. 

 Martin's Falls, Albany River, Hudson's Bay, Nova Scotia]), 



