12 THE CANADIAN ENTOMOLOGIST. 



been described, agrees with the male in every particular, except, of course, 

 the separation of the eyes. My specimens measure considerably larger 

 than those of Osten Sacken, being 14 to 15 mm. The species has here- 

 tofore been known only from California. 



49. SpJiecomyia occidejitalis^ sp. nov. (Fig. 5.) 



]\[ale. — Head shaped about as in S. brevicornis^ but the tubercle is 



fuller and more rounded, and the face more concave below the antennae. 



Cheeks and oral margin shining black. Face entirely covered with dense 



yellow pollen, which is continued above around the base of the antennal 



prominence. This prominence, which is shining black, points forward as 



in 6*. brevicor?iis, and is not tilted upward as in S. vittaia. The antennce 



are brownish-black, with a black, bare, basal arista; the first two antennal 



joints are about equal in length, the third somewhat longer and nearly as 



broad as long, rounded below and nearly straight above, the upper outer 



corner being quite angular. Pile of vertex black. Thorax black, shining, 



with black pile intermixed with some yellow, and with yellowish markings 



as follows : in front, on either side of the midline is a small spot which 



is continued backward as a faint line, on the humerus another rounded 



spot, and on the transverse suture another, an elongate spot above the 



postalar callosities, and a transverse line in front of the scutellum, which 



in some specimens is connected with a faint mid-dorsal line ; on the 



mesopleura is an oval spot, and under it on the sternapleura a smaller 



round spot. The scutellum is entirely black, with black pile above and 



yellow on the sides. Abdomen black, with yellow bands and yellow 



pile. The bands are as follows : A rather narrow band on the posterior 



margin of segments i to 4, a broader interrupted band across the middle 



of the black portion of segments 2 to 4 (on segment 4 of some specimens 



this band is near the anterior margin of the segment, and it may be 



comiected slightly with the posterior band at the lateral margin) ; all the 



bands reach the margin. On the venter there are yellow cross-bands, 



interrupted at the middle, on the anterior margin of segments 2 to 4. 



The hypopygium is black, with some yellow pollen and with black and 



yellow pile. Legs yellowish, the femora all brown except the tip, the 



posterior pair lighter than the others ; tibia with a brownish ring about 



the middle, most distinct on the anterior pair, sometimes entirely wanting; 



distal tarsi infuscated. Wings clouded with brownish, especially along 



the veins, stigma yellowish-brown. Halteres yellow. 



Female. — Similar to male in all essential respects. The fifth segment 

 of the abdomen is marked like the fourth. The front is considerably 



