340 ERNEST A. BACK 



Callinicus calcaneus (PI. VI, fig. 2). 



Callinicus calcaneus Loew, Cent., X, 32, 1872. 



Callinicus calcaneus Osten Sacken, Western Diptera, 291, 1877. 



Dasypogon bilimatum Bigot, Annales, 1878, 411. 

 cf $ . — Length 13.5-19 mm. — Reddish-brown, polished; bloom of 

 head, humeri and pleurae, deep golden; thoracic stripes black, legs 

 wholly yellowish-red; wings dark yellowish-brown with purplish re- 

 flections; pile and bristles of entire body golden or reddish. 



Reddish; the thorax and abdomen of a deep reddish-brown; the 

 pleura? even darker. Head everywhere, except on ocellar tubercle, 

 thickly deep golden pruinose; basal segments of the antenna? reddish; 

 the third segment black, sometimes reddish at base below; style black. 

 Proboscis and palpi black, the latter well haired. The thoracic stripes 

 black, somewhat obscured by a grayish bloom; the median stripe 

 narrowly bisected by a line of short golden hair; the lateral stripes 

 greatly abbreviated anteriorly and separated from the median stripe 

 by a narrow line of pale ground color and a row of short hairs; the 

 stripes themselves are bare. Humeri densely golden pruinose, the 

 lateral margins of the dorsum more obscurely so; metanotum, and to 

 some extent the pleurae, blackish, but densely golden pruinose. Base 

 of the first abdominal segment black ; the posterior margins of the 

 remaining segments for the most part narrowly black or blackish, 

 the lateral margins more broadly so; posterior angles of the first seg- 

 ment rich golden pruinose, those of the second, third and fourth seg- 

 ments whitish pruinose. Venter polished red, the several segments 

 black on extreme distal margin, and on the base with a pale pruinose 

 fascia, sometimes not in evidence. Legs wholly yellowish-red; the 

 hind metatarsi variable, concave on the inner side, on the outer side 

 convex, this effect being strengthened by the arrangement of the hair; 

 claws black; yellow at base. Pile of body short, on the thoracic 

 dorsum and abdomen quite so, wholly golden; the bristles of the head, 

 thorax and scutellum verging toward vulpinous; pleurae with a varying 

 amount of short pile; trichostical hair long. Wings brownish, toward 

 the costa and axillary cell sordid yellow; veins blackish, the costa and 

 subcosta brown; the veins bordered with black in varying degrees; 

 wings in certain lights with deep purplish reflections. 



Type. — M. C. Z. Two male and seven female specimens. 



Habitat. — Cal. ; Cisco (June, elev. 5,000 ft.), San Rafael 



(Marin Co., May 27, 0. Sacken), Cal. Not rare in California. 



CHRYSOCERIA. 



Chrysoceria Williston, Jour. N. Y. Ent. Soc, XV, 1, 1907. 

 Chrysoceria Williston, Manual, 1907. 



Species resembling Callinicus as regards general shape of 

 head and wings, and in the possession by the middle tibiae of 



