604 CALIFORNIA ACADEMY OF SCIENCES. 



sexes are blackish, third joint slightly reddish. Thorax 

 blackish in ground color, grayish pollinose, showing a me- 

 dian approximated pair of dark vitt£e abbreviated posteri- 

 orly. The middle and hind coxie, especially in the fe- 

 male, are also yellow pilose. The hypopygium is not 

 nearly so large as in 7?. acton, about same size as in R. 

 xanthos. The middle and hind legs of male are almost 

 wholly blackish, the tarsi being brownish and the pulvilli 

 yellowish; the middle tibiae are also somewhat brownish. 

 The front tibia and tarsi, however, are brownish yellow 

 with pile of the same color. Macrocheetaj of legs all 

 black. The female has the middle tibite and tarsi more 

 yellowish, and the front tibite and tarsi still more so, the 

 latter with some of the macrochaetse yellowish. Macro- 

 chceta? of margin of thorax and scutellum blackish in both 

 sexes. In the right wing of the male the small cross-vein 

 of posterior margin is represented only by the merest 

 stump, and is abbreviated and attenuated in the other 

 wing and in both wings of the female. The ocelli are 

 concave and pollinose. This species may be known by 

 the smoky tinge of its wings, the wings in the other 

 species being perfectly clear. 



It should be noted that Osten Sacken says that his 

 specimen may have come from Lower California. 



25. Rhaphiomidas mellifex n. sp. 



Syn. R. episcopiis Coquillett (non Osten Sacken). 



Baja California. September (Eisen). Six females, 

 from San Jose del Cabo. This is apparently the species 

 which Coquillett (West Am. Sci., Jan. 1891, p. 85) men- 

 tions as R. episcopiis. The distinctions which he has 

 drawn there between this species and acton are nullified 

 by his later article in Can. Ent. (Dec. 1892, pp. 314-315). 

 The ocelli are not convex and shining, but are collapsed 

 and yellowish pollinose as they are in all the other species 



