454 ENTOMOLOGICAL NEWS. [Dec., '15 



Type. $, Los Angeles County, California, July (D. W. 

 Coquillett), [U. S. N. M. No. 3190]. 



Mythicomyia rileyi. 



1893. Coquillett, Ent. News, iv, 209. 



1902. Melander, Tr. Am. Ent. Soc. xxviii, 338. 



$ . Black, rather densely gray pruinose. Occiput above and ocellar 

 tubercle behind white. Frons, face, cheeks, oral margin, humeri, post- 

 alar and notopleural line, pleural spots, halteres, narrow apices of 

 abdominal segments, apices of femora, bases of tibiae and tarsi, whitish; 

 apices of tibiae brown. 



Third antennal joint lanceolate, scarcely broader than second, three 

 times as long as broad; style cylindrical, half as long as third. (An- 

 tennae of type missing.) Hind tarsi notched at base. Anal cell open. 

 Hypopygium shining, exserted, larger than preceding segment. Length, 

 1.5 to 2.0 mm. 



9 . Similar, but lower f rons, broad notopleural stripe, scutellum ex- 

 cept discal spot, all legs, including coxae, yellow. Proboscis twice as 

 long as head. 



Type. $, Kern County, California, May (D. W. Coquil- 

 lett), [U. S. N. M.]. 



This species seems very closely allied to tibialis, but is much 

 smaller, the legs are lighter, the hypopygium is black and the 

 abdomen not velvety black. 



I have seen another male in the U. S. National Museum 

 from Mesilla, New Mexico, Apr. 22 (T. D. A. Cockerell ; on 

 Erigeron flowers). There are before me 2$ , 52, from Ala- 

 mogordo, New Mexico, Apr. 23, 1902, which seem to be the 

 same, and from which the above description of the female was 

 drawn. The males, however, have the hypopygium inconspic- 

 uous, and one of them has no white on the ocellar tubercle. 



Mythicomyia armipes new species. Figs. 5 and 6. 



$ . Black ; f rons except ocellar tubercle, face, cheeks, humeri, post- 

 alar calli, pleural marks, halteres, apices of abdominal segments, apical 

 half of fore femora, apices of middle and hind femora, fore tibiae ex- 

 cept a medial spot and apices, bases of middle tarsi and wing veins, 

 yellow. Wings hyaline. 



Opake ; occiput, lateral margins of mesonotum, pleurae, lateral mar- 

 gins and apical segments of abdomen and femora grayish. 



Third antennal joint three times as long as broad; style half as long 

 as third. Abdomen elongate ; hypopygium inconspicuous. Legs long, 



