THE CANADIAN ENTOMOLOGIST 169 



white ; and in the abdomen exhibiting no changeable appearance of 

 chequer-work. 



Vakikt\' i>. with a green abdomen. 



C. with chalybeous abdomen. 



X.— HOMALOPTERA, Leach. 



FAMILY HiPPOBOSCID^. 



446. HIPPOBOSCA EQUINA Liwi. — Length of body, excluding wings, 

 4 lines ; including do., 5 lines. Locality not mentioned. 



Body flat ; subpubescent, dirty-yellow, spotted with brown, with whit- 

 ish signatures. On the forehead, between the eyes, is a brown quadrangu- 

 lar spot shaped like what are called skates eggs, with four projecting points 

 at the angles ; abdomen underneath pale, anus hairy ; tarsi with four black 

 claws, the inner ones shorter and truncated ; wings much longer than the 

 body. 



[An European species. Loew ( Moiiographs of Dipteni, part i.) 

 divides the order of Diptera into three sections : — Neinocera^ Brachycera 

 and Coriacea, and includes this family, with the Nyderibida, in the last 

 mentioned.] 



[318.] XL— APHANIPTERA. 



FAMILY PULICID/E. 



447. PuLEX GiGAS Kirby. — Plate vi., hg. 9. — Length of body 2 

 lines. Two specimens taken in Lat. 65°. 



Body ovate, reddish-yellow ; segments, particularly the first of the 

 trunk, pectinated with black bristles ; antennae, though short, very distinct, 

 standing out from the head, they seem to consist of two joints, the last 

 conical and obtuse ; the base of the second segment of the trunk is 



