Vol. XXV] ENTOMOLOGICAL NEWS 457 



Descriptions of new North American Acalyptrate 

 Diptera — I. 



By E. T. Cresson, Jr., Academy of Natural Sciences of 

 Philadelphia. 



These descriptions are published now and in this form 

 mainly to establish priority and to eliminate the necessity of 

 circulating manuscript names. The types are in the collection 

 here unless otherwise noted. 



Sepedon pacifica n. sp. 



Cinnamon-brown to tawny. Opake with head and abdomen shin- 

 ing. Two spots above foramen, spot at base of frontal bristles sil- 

 very, tinged with yellow. Head higher than long. Front broader 

 than long, orbits slightly divergent ; the para- and meso-f rontal areas 

 separated by sharp and well-defined ridges running laterad from the 

 ocellar tubercle and evanescent at lunular margin ; thus the frontal 

 bristle is situated in the depressed parafrontal. The spot laterad of 

 antennae round and velvety black. Otherwise similar to fuscipennis 

 Loew, but larger and wholly darker in color. Wings deeply tawny, and 

 the spines on femora beneath more developed and series more extend- 

 ed basally. Length 9 mm. 



Holotpye. — ■$, Redwood Canyon, Marin Co., California, 

 ]\lay 17, 1908 (Cresson). Type No. 6076. 



Distinct from fuscipennis Lw., to which it is closely allied, 

 by the broad front having the deeply sunken orbital and middle 

 areas separated by distinct longitudinal ridges, the latter area 

 being much more than one-third the width of the front. 



Coelopa vanduzeei n. sp. 



Black, opake to subopake ; lunule, first and base of second joints of 

 antennae, proboscis, trochanters and articulations of legs, yellowish- 

 brown. Halteres yellow. Wings gray with costa, veins i and 2 yel- 

 low. Squamae white with yellow cilia. Legs of female brown with 

 tarsi decidedly more yellowish. All surfaces, especially of body, cov- 

 ered with ochreous dust with mesonotal impressed lines black. Front, 

 except at vertex, velvety black in certain aspects ; ocellar tubercle, or- 

 bits and apices of fore and hind femora somewhat shining. Cheeks 

 with short bristles, but those at anterior margin longer. 



The three impressed mesonotal lines distinct in male. Second noto- 

 pleural and postalar bristles strong; humeral, first notopleural, an- 

 terior postalar and sternopleural bristles very short. In the female all 



