THE .FLEAS OF NORTH AMERICA 



131 



Figxjbe 6. — A, head of Ctenophyllus terribilis, female; B, tarsus of leg III of 

 Tarsopsylla color adensis; C, tibia of leg III of Amphipsylla ewingi; D, head 

 of Stenistomera alpina; E, receptacula seminis of Atyphloceras multidentatus. 



