THE FLEAS OF NORTH AMERICA 59 



The original description of bitperroot&nsis was based on two male 

 specimens. In this species sternal plate VIII of the male is long and 

 slender and bears four subapical bristles. 



Trichopsylla (Trichopsylla) ciliata ciliata (Baker), new combination 



Ceratophyllus ciliaius Baker, 1904, U. S. Natl. Mils. Proc. 27: 397, pi. 10, figs. 1-6. 



Type host. — "Chipmunk." 



Type locality. — Mountain View, Calif. 



Range. — For the species as a whole, western part of the United 

 States and Canada. This particular subspecies is known from the 

 Western States. 



The original description of this subspecies is accompanied by 

 detail figures of both sexes. The subspecies occurs chiefly upon chip- 

 munks, which apparently are the natural hosts. • 



Trichopsylla (Trichopsylla) ciliata mononis (Jordan), new combination 



Ceratophyllus ciliatus mononis Jordan, 1929, Novitates Zool. 35: 3.5, pi. 1, figs. 

 17-18. 



Cotype hosts. — Mustela arizonensis (Mearns) (weasel) and Eutam- 

 ias'Specvosus f rater (Allen) (western chipmunk). 



Type locality. — Pine City. Mono County, Calif. 



Range. — Known only from California. 



In this subspecies the process of the clasper is narrower than in 

 either of the other subspecies and the upper lobe of sternal plate 

 VII of the female is broadly rounded and very much broader than 

 the lower lobe. The original description of mononis is accompanied 

 by a drawing of the clasper of the male and sternal plate VII of 

 the female. 



Trichopsylla (Trichopsylla) ciliata protixa (Jordan), new combination 



Ceratophyllus eil'mtus protinus Jordan, 1929, Novitates Zool. 35: 34, pi. 1, figs. 

 15-16. 



Type ho^t. — Eutarmas townsendii (Bach.) (western chipmunk). 



Type locality. — Sumas. British Columbia. 



Range. — Known only from British Columbia and Alaska. 



In the subspecies protina the process of the clasper is broader than 

 in mononis but narrower than in ciliata. The upper lobe of sternal 

 plate VII of the female is triangular with an acute apex. The 

 original description of protina is accompanied by a drawing of the 

 clasper and another of sternal plate VII of the female. 



Trichopsylla (Trichopsylla) eremica (Baker), new combination 



Ceratophyllus eremicus Baker, 1904, U. S. Natl. Mus. Proc. 27: 417. 

 Malaraeus eremicus Jordan, 1933, Novitates Zool. 39: 76. 



Type host. — **Xest of Peromyscus eremicus" (white-footed mouse). 



Type locality. — Santa Rita Mountains. Ariz. 



Range. — Known only from Arizona. 



The original description of eremica was based upon two females. 

 The species is especially characterized by the length of the first 

 segment of the hind tarsus, which exceeds that of the second, third, 



