THE FLEAS OF NORTH AMERICA 61 



Trichopsylla (Trichopsylla) exilis op ada (Jordan), new combination 



MvnopsyUus exilis opadus Jordan, 1938, Novitates Zool. 41: 121, fig. 70. 



Type host. — OnycJwmys leucogaster capitulatus Holl. (grass- 

 hopper mouse). 



Type locality. — Yavapai. Ariz. 



Range. — Known only from Arizona. 



According to the original description of opada it differs from the 

 type subspecies in that the lower apical ''spinform** of the movable 

 finger is narrower and much shorter than the upper. 



Trichopsylla (Trichopsylla) exilis tripta (Jordan), new combination 



MonopsyUus exilis triptus Jordan, 1938, Novitates Zool. 41: 122, fig. 71. 



Type host. — u Dipodomys or Onychomys n (mice). 



Typt locality. — Rugger. Colo. 



Range. — Known only from Colorado. 



The original description of tripta is based on two females. This 

 subspecies can be distinguished from the other two in that the sinus 

 of sternal plate VII of the female "is deeper and narrower"' and 

 the upper lobe projects "farther distad." 



Trichopsylla (Trichopsylla) forxacis (Jordan), new combination 



Monopsyllus fomacis Jordan, 1937, N<>virates Zool. 10: 263, fig. 45; Jellison, 

 1940, U. S. Pub. Health Serv. Rpts. ">: 491, fig. 2. 



Typr host. — Sciurus griseus Ord (squirrel). 



Type locality. — Sevenoaks, Calif. 



Range. — Known only from California. 



From the original description of this species, which is based on 

 two females and accompanied by a drawing of the female ter- 

 minalia. the authors quote as follows : "Clo-ely related to M. 

 eumolpi Roths. 1905. apparently differing only in the shape of 

 sternum VII and in bursa copulatrix."' The male of fomacis was 

 described by Jellison (1940). He states. "The male, like the female, 

 shows very close relationship to J/, eunwlpi . . ." In the male of 

 fomacis there are only two large setae on sternal plate VIII. instead 

 of five or six as in eumolpi, and the lowest spinelike bristle of the 

 movable finger is but slightly longer than the middle instead of being 

 over twice as long. 



Trichopsylla (Trichopsylla) groexlaxdica (Wahlgren), new combination 



CeratophyllU8 groenlandica Wahlgren. 1903, Arkiv. fur Zoo], l : ls3. pi. 7. fiss 

 1-2. 



Type host. — "Myodt h torquatus? 



Type locality. — Kaisei Franz Josephs Fjord, East Greenland. 



Range. — Known only from East Greenland. The record from the 

 type locality for this species probably represents the farthest north 

 for any flea in the New World. 



The original description of groenlandica was based on a single 

 male and is accompanied by two detail figures. In Wagner's cata- 

 logue of Palaearctic Siphonaptera this species is listed (SO, />. 9) only 



