THE CANADIAN ENTOxMOLOGiST. 13 



wider tlian the vertex, while in the male the eyes are narrowly separated. 

 There is a shining black facial stripe extending rather broadly from the 

 tubercle to the base of the antennal prominence, and extending narrowly 

 above to the insertion of the antennoe, and below to the oral margin, where, 

 however, it is not continuous with the black of the cheeks. 



Length, 13 to 14 mm. {o:a'denta/is = WQStQvn). 



Described from eight males and one female taken as follows: Glacier, 

 Aug. 21, 1902, R. C. Osburn ; Vancouver, May 2, 1903; May 9, 1903 

 (the female) ; April 23, 1904; April 28, 1906, and Grouse Mt., July 19, 

 1903, R. V. Harvey; Vancouver, April 21, 1906, and Mission, April 13, 

 1906, R. S. Sherman ; Hoquiam, Washington, April 29, 1904, H. E. 

 Burke. (The last mentioned was kindly lent me by Mr. Coquillett, of the 

 U. S. National Museum.) Mr. Harvey notes the capture of his specimens 

 on blossoms of Vaccinmin parvifloriim, in company with wasps. 



The specimen taken by myself was mentioned in my former list 

 (Can. Ent., Vol. XXXVI, Sept., 1904, p. 262) as doubtfully belonging to 

 S. PattoJii, ^Viil. Since then the study of better material, and especially 

 a comparison with the type specimen of Fafio?ii, show it to be entirely 

 different. The absence of a facial stripe in the male, the entirely black 

 scutellum, and the colour markings of the thorax and scutellum (which 

 appear to be very constant) easily distinguish the species. 



50. Sphecoftiyia nasica, sp. nov. (Fig. 6 ) 



Male. — Head a trifle broader than the thorax. Face produced 

 downward, deej)ly concave below the antennal prominence, the lower part 

 of the face with the tubercle projecting prominently forward and down- 

 ward. Face and front covered with a dense coat of yellowish pollen, the 

 black ground colour appearing on the forward projecting antennal 

 prominence. Cheeks shining black. Antennae very short, scarcely more 

 than half of the vertical length of the eye; third joint considerably broader 

 than long, brownish-black, and with a long and rather stout black arista. 

 Vertex shining black, with black pile. Eyes narrowly separated. Thorax 

 black, shining, with short black pile, which is intermixed with yellowish 

 anteriorly, bunches of yellow pile on the pleura and postalar callosities; a 

 distinct yellowish poUinose spot on the humerus, and a fainter one 

 adjoining it above, an oval spot on mesopleura and a rounded one below 

 this. Scutellum entirely bronze-black, with yellow pile. Abdomen 

 slightly narrower than thorax, the sides nearly parallel, black, yellow 

 pilose, and marked with yellow as follows : on segment i the shining 



