324 



THE CANADIAN ENTOMOLOGIST. 



four small hairs above the stigma and one long bristle, and one or two 

 small hairs below the stigma. At and near the apical and ventral margins 

 of this tergite there are seven to eleven long bristles and four to six 

 smaller ones proximally of the long ones, the apical edge bearing besides 

 three long and four short bristles. 



Length : ^,1.3 mm.; $ , 2 mm. 



The following is a list of the specimens we have in our collection : 



i (J. — Horse Creek, Upper Columbia Valley, Canada, 13th Oct., 

 1903, Pero7nyscus canadiani^ G. F. Dippie. 



I $. — Horse Creek, Upper Columbia Valley, Canada, 14th Feb., 

 1901, Microtiis Driimmondi^ G. F. Dippie. 



1 (^ . — Blackfalds, Alberta, Canada, nth Aug., 1904, Kangaroo 

 mouse, A. D. Gregson. 



2 9. — Kicking Horse Canyon, British Columbia, 6th Oct., 1903, 

 Evotomys gappej-i, G. F. Dippie. 



3 9- — Red Deer, Alberta, Canada, 4th Aug., 1901, Evotomys 

 gapperi, G. F. Dippie. 



J. Cte7iopsylliis hamifei'^ spec. nov. — This species bears, like the 

 preceding species and Ct. hesperomys. Baker (1904), a genal ctenidium of 



two spines. The insect 

 agrees very closely with Ct. 

 selenis^ except in the geni- 

 talia. 



Head. — Only the upper 

 two bristles of the frontal 

 row are short and spine- 

 like. 



Thorax. — The meta- 

 thoracical epimerum bears 

 nine bristles, 4, 4, i. 



Abdomeji. — The abdom- 

 inal sternites of segments 

 4 to 6 bear on each side a 

 row of four bristles, while the seventh segment has a row of five. 



Modified Segments. — $ . The eighth sternite (Fig. 44, VHI st.) is 

 apically produced downward, bearing at some distance from the apical 

 edge four long bristles. The manubrium (M) is rather broader than in 

 Ct. selenis. The clasper is longer and the finger (F) larger and quite 



