1919.] NATURAL SCIENCES OF PHILADELPHIA. 177 



spots brown. Hind femora sometimes pale. Branch of third vein 

 originating before tip of first; anal cell closed before margin. 



Type—d"; San Jacinto, California, May 29, 1917, (E. P. Van 

 Duzee), [Cal. Acad. Sci.]. Paratypes.—l(S^, 2 9 ; topotypical. 



Chrysopilus dilatus new species. 



Differing from all known species by the enlarged first antenna! 

 joint. Thus suggesting Symphoromyia but the arista is terminal 

 and the anal cell is closed. 



cf . Black; stalk of halteres, knees, tibiae and bases of tarsi, paler. 

 Opaque. Blackish brown, with face, pleura below, and venter more 

 grayish. Erect pile of ocellar tubercle, face, palpi, antennae, meso- 

 notum, scutellum, sternopleura, fore coxae, and femora, black; of 

 occiput, pteropleura, and abdomen, pale. Sparse tomen on meso- 

 notum, abdomen and femora, pale yellow or whitish. Wings hyaline; 

 stigma brown. Eyes narrowly separated or contiguous. First an- 

 tennal joint much enlarged, twice as long as second and third to- 

 gether, nearly as broad as long, with dense, long pilosity. Palpi 

 long, falciform, densely long pilose. Anterior branch of third vein 

 originating before tip of first vein. Anal cell closed before margin. 

 Length, 6 mm. 



Type. — cf ; Berkeley Hills, Alameda County, California, April 11, 

 1908, (E. T. Cresson, Jr.), [A. N. S. P. No. 6199]. Paratypes.—2d^; 

 topotypical. 



BOMBYLIID^. 



Exoprosopa fumosa new species. 



This species suggests some of those belonging to Poeciloanthrax. 

 It belongs to the group, in this genus, having the second abdominal 

 segment black tomentose. The wings are fumose ^vith the cells in 

 the inferior part of the ^vings sub-hyaline. 



9 . Black ; oral margin and scutellum, paler. Knob of halteres 

 whitish. Pile black on: head, disk of mesonotum, scutellum, pectus, 

 apex of abdomen. Yellow on: collar, lateral mesonotal margins, 

 meso- and meta-pleura, lateral margins of abdominal segments 1-5. 

 Tomen all yellow except dorsum of second abdominal and bases of 

 third to fifth segments. All bristles black. Wings uniformly brown 

 except subhyaline areas in: apex of marginal, apex of first sub- 

 marginal, second and third submarginals, discal, second to fourth 

 posteriors, anal, and axillary. (In other words, the veins traversing 

 the subhyaline inferior portion of the wings are broadly clouded 



