52 MISC. PUBLICATION 5 0, U. S. DEPT. OF AGRICULTURE 



rupestris by Jordan (4-0, p. 32) . Drawings of part of the terminalia 

 of both sexes of lab is were given by Jellison in 1939. 



Oropsylla (Opisocrostis) oregonensis (Good and Prince), new combination 



Opisocrostis oregonensis Good and Prince, 1930. U. S. Pub. Health Serv. Rpts. 

 54 : 1867, figs. 1-2. 



Type host. — Citellus oregonus (Merr.) (ground squirrel). 



Type locality. — Baker County. Oreg. 



Range. — Oregon and Idaho. 



The original description of oregoivensis is accompanied by a draw- 

 ing of the posterior part of the abdomen of each sex. The species 

 is especially characterized by the triangular manubrium of the 

 clasper in the male and the very deep V-shaped emargination on 

 each lateral posterior margin of sternal plate VII of the female. 



Oropsylla (Opisocrostis) saundersi (Jordan), new combination 



Ceratophyllus saundersi Jordan. 1933, Entomologist 66: 16, ri.^s. 6-7. 

 Opisocrostis saundersi Jordan, 1933, Novitates Zool. 39: 73. 



Type host. — Citellus richardsonii (Sab.) (ground squirrel). 



Type locality. — Saskatchewan. Canada. 



Range. — Known only from Canada. 



The original description of saundersi is accompanied by drawings 

 of a part of the terminalia of each sex. The species is especially char- 

 acterized by the broad, straight, movable finger of the clasper in the 

 male and the absence of the notch usually observed in the posterior, 

 lateral margin of sternal plate VII of the female. 



Oropsylla (Opisocrostis) tuberculata cynomuris (Jellison), new combination 



Opisocrostis tuberculatum cynomuris Jellison. 1039. U. S. Pub. Healtb Serv. 

 Rpts. 54 : 843, 3 figs. 



Type host. — Cynomys ludovicianus (Ord) (prairie dog). 



Type locality. — Jefferson Canyon. Broadwater County, Mont. 



Range. — Montana. Colorado, and Wyoming. 



Drawings of part of the terminalia of each sex accompany the orig- 

 inal description of this variety. It differs from the type variety in 

 that the apex of the movable finger in the male is rounded, instead 

 of being acute as in tuberculata tuberculata, and in that the upper 

 lobe on the posterior margin of sternal plate VII of the female is 

 broad and truncate instead of being narrow and acutely angulate as 

 in t. tuberculata. 



Oropsylla (Opisocrostis) tuberculata ornata (I. Fox), new combination 

 Opisocrostis ornatus I. Fox, 1940, Wash. Ent Soc. Proc. 42: 67. pi. 10. fig. 8. 



Type host. — Cynomys gunnisoni (Baird) (prairie dog). 



Type locality. — Saguache County. Colo. 



Range. — Known only from the type locality. 



The original description of ornata was based on the male and is 

 accompanied by a drawing of the clasper. This variety is near 

 cynomuris. but the movable finger of the male is distinctly broadened 

 opposite the apex of the dorsal process, and it terminates apically 

 in a more acute angle. It also is near the type variety of tuberculata^ 

 but the movable finger is stouter. 



