THE CANADIAN ENTOMOLOGIST. 139 



There is in the male near the base of the posterior femora below an 

 obtuse tobercle covered with very short black bristle-like hairs. In this 

 character this species shows a relationship with H. chrysostomiis, Wied, of 

 this country, and a stronger relationshij) with H. fnitetontm, Fabr., and H. 

 versicolor, Fabr., of Europe. 



30. Helophilus integer, Loew ; Centur. iv., 78. 



I have a female specimen of this species taken at Newark, New 

 Jersey. I would make the foUowint; additions to Loew's rather short 

 description : 



Face and cheeks yellow, front black pilose, below yellow and above 

 black pollinose. The middle, as well as the anterior and posterior 

 femora, have small black spots on the inside at the base. These spots 

 consist of a dense mass of minute spinous bristles. The black colour at 

 the base of the scutellum is visible only when viewed from in front, as is 

 the case in the related species of the genus. 



31. Helophilus aitreopilis, Townsend, Trans. Am. Ent. Soc, xxii., p. 51 



(1895), is the same as II. Iwtiis, Loew, Centur., iv., 77 (1863). 

 I am unable to see any differences between the description given by 

 Mr. Townsend and VVilliston's description (Synopsis N. A Syrphidae, 

 189) of H. Icefits, Loew. I have also examined the type of H. aureopilis 

 in the collection of the Kansas State University, and compared it with 

 specimens of H. Icetiis from New York and Colorado and find not the 

 slightest differences between them. Mr. Townsend describes his species 

 as " H., n. sp., dSi.fiavifacies, Bigot." Helophilus flavifacies. Bigot, Ann. 

 Soc. Ent. Fr., 1883, 344, must certainly be a distinct species that will be 

 very likely recognized in time. It differs especially in the coloration of 

 the posterior legs, which are described by Bigot thus : " Avec trois 

 anneaux bruns, I'un, sis a I'extre'mite des cuisses les deux autres sur les 

 tibias," thus lacking the broad conspicuous black median band on the 

 femora. Besides this the bases of the anterior and middle femora are 

 presumably at least yellow in Bigot's species since he does not mention 

 that they are black, and there seems to be a difference in the maculation 

 of the abdomen. 



32. Pterallastes perfidiosus, n. sp. Plate V., Fig. 5, a, b. 



Front and cheeks black, the former with long erect black pile, inter- 

 mixed below with yellow. Face yellow, pilose, slightly concave to tip of 

 the inconspicuous tubercle, thence straight and slightly receding to the 

 epistoma, which is truncate at the apex. Antennse and arista yellow, third 



