60 MISC. PUBLICATION 5 00, U. S. DEPT. OF AGRICULTURE 



and fourth combined. A note by Jordan (1933) states that the 

 male genitalia of eremica are remarkably different from those of its 

 congeners (comprising his genus Malaraeus). 



Trichopsylla (Trichopsylla) eumolpi eumolpi (Rothschild), new combination 



Ceratophyllus eumolpi Rothschild, 1905, Novitates Zool. 12: 161, pi. 6, figs. 2-4. 



Cotype hosts. — Eutamias minimus borealis (Allen) and Eutamias 

 amoenus a finis (Allen) (western chipmunks). 



Cotype localities. — A number of localities in Alberta and British 

 Columbia. 



Range. — The species is knoAvn from the western part of the United 

 States and Canada. The range of this particular subspecies is also 

 the western part of the United States and Canada. 



Th£ original description of eumolpi is accompanied by drawings of 

 the terminalia of both sexes. This subspecies parasitizes chipmunks 

 by preference. 



Trichopsylla (Trichopsylla) eumolpi cyrtura (Jordan), new combination 



Ceratophyllus eumolpi cyriurus Jordan, 1929, Novitates Zool. 35: 34, pi. 1, fig. 14. 



Type host. — Mephitis sp. (skunk). 



Type locality. — Paradise, Ariz. 



Range. — Known only from Arizona. 



According to the original description, cyrtura differs from the 

 type subspecies in that the process of the clasper arid the movable 

 finger are broader, and the second pigmented spine is much nearer 

 to the long one than to the short subapical pigmented spine. In the 

 female of cyrtura the lobe of sternal plate VII is said to be less 

 rounded than in the type subspecies. 



Trichopsylla (Trichopsylla) euphorbi (Rothschild), new combination 



Ceratophyllus euphorbi Rothschild, 1905, Novitates Zool. 12: 105. pi. 6, fig. 11. 



Type host. — "Peromyscus canadensis^ (white-footed mouse). 



Type locality. — Horse Creek, Upper Columbia Valley, British 

 Columbia. 



Range. — Known only from British Columbia. 



The original description of euphorhu which was based on a single 

 male, is accompanied by a figure of part of the terminalia. The 

 species appears to be rare. 



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



Megabothris exilis Jordan, 1937, Novitates Zool. 40: 204, fig. 40. 



Type host. — Onyehomys leucogaster (Wied.) (grasshopper 

 mouse). 



Type locality. — Powderville, Powder River County, Mont. 



Range. — The species as a whole occurs in the western part of the 

 United States. The type subspecies occurs in Montana. 



The original description of this species, based on two males, is 

 accompanied by a figure of the male terminalia. 



