6 PKOCEEDINGS OF THE NATIONAL MUSEUM vol.69 



tergites are moderately projecting, the arcuate abdominal bands 

 are narrow and attain the margins of the tergites only at the apical 

 corners; the pteropleura is partly black pilose. According to these 

 characters, it would come in the key with laterale and fasciolatuiii^ 

 from which it may be separated by its smaller size and the relative 

 length of the antennal joints. 



Described from one male. 



Type locality). — St. Martins Falls, Albany River, Hudson Bay, 

 Canada. 



Type. — In British Museum. 



CHRYSOTOXUM VILLOSULUM Bigot 



Chrpsotoxum villosulum Bigot, Ann. Soc. Ent. France, ser. 6, vol. 3, 1883, 

 p. 823.— CuRRAN, Can. Ent., vol. 56, 1924, p. 34 (misidentification). 



.The type specimen is in poor condition. The abdomen is lost and 

 the head is glued on the thorax. The head seems to be much more 

 globose in shape and the eyes much more pilose than in the other 

 American species. Perhaps the head is mismated with the thorax 

 and it may be that it belongs to a species which does not occur in 

 America. In view of the unsatisfactory condition of the specimen 

 and the original description, it has been decided to leave this species 

 unrecognized in the present paper. 



Curran has identified a species from Oregon, Washington, and 

 Idaho as villosul/u,m. The male of this species has the frontal triangle 

 and the legs yellow pilose. Bigot's type specimen, a male, has the 

 frontal triangle and the femora black pilose and the relative lengths 

 of the antennal joints are 1 : 1.5 : 2. 



Type locality. — "Washington Territory." One male. 



Type. — In British Museum. 



CHRYSOTOXUM CHINOOK, new species 



Chrysotoxum villosulum Bigot, Curkan, Can Ent., vol. .56, 1924, p. 34 

 (misidentification) . 



This species is close to ventricosum., but may be separated by its 

 more extensive yellow coloration; frons of male yellow pilose; 

 pteropleura yellow pilose; second sternite margined behind with 

 yellow; uniformly larger size, 13-14mm. The antennal joints are 

 1:1.25:2. 



Three specimens (2 males and a female, Idaho) are distinctly 

 smaller, 9 mm. The arcuate abdominal bands are separated from 

 the margins of the tergites as in ventricofmni. Twenty specimens at 

 hand. 



Type locality. — Lewis Peak, Blue Mountains, Washington. 



