THE FLEA8 OF XORTH AMERICA 39 



Atyphloceras echis Jordan and Rothschild 



Atyphloceras echis Jordan and Rothschild, 1915, Ectoparasites 1: 59, fig. 64. 



Type host. — Mus. sp. (mouse). 

 Type locality. — Paradise, Ariz. 

 Range. — Southwestern part of the United States. 

 The original description of this species was based on a single female. 

 The male is unknown. 



Atyphloceras felix Jordan 



Atyphloceras felix Jordan, 1933, Novitates Zool. 39: 69, fig. 18. 



Type host. — Peromyscus truei (Shufeldt) (white-footed mouse). 



Type locality. — Cuddy Valley. Ventura County. Calif. 



Range. — Known only from California. 



The original description of this species, based on a single male 

 specimen, is accompanied by a drawing of the male terminalia. In 

 this species the labial palpus is seven-segmented. 



Atyphloceras multidentatus (C. Fox) 



(Fig. 6, E) 



Ceratophyllus multidentatus C. Fox, 1909. Ent. News 20: 107, 3 figs. 

 Atyphloceras multidentatus Jordan and Rothschild, 1915, Ectoparasites 1: 59. 



Type host. — "Xest of Neotoma sp." (wood rat). 

 Type locality. — San Francisco, Calif. 

 Range. — Western part of the United States. 



This is a medium-sized species in which the body of the penis is 

 much swollen and heavily pigmented. 



The Genus Dactylopsylla Jordan 



(Fig. 5, A) 



Dactylopsylla Jordan, 1929, Xovitates Zool. 35: 37. Type, Dolichopsylla oluei 

 C. Fox (by original designation). 



Frontal tubercle very small, angulate apically. Forehead with 2 rows of 

 lateral setae, none of which is spiniform. Eyes vestigial. Labial palpus 5- 

 segrnented. Postantennal region of head with but a single row of setae, the 

 marginal row. Pronotal comb with the usual long, black spines. Mesosternum 

 not separated from mesepisternum by an inner ridge. Femur I with several 

 lateral setae; coxa III without a row or patch of spinelets on inner surface; 

 segment I of posterior tarsus shorter than II, III, and IV taken together; last 

 segment of each tarsus with 5 pairs of lateral plantar bristles, the first pair 

 of wh:ch is shifted ventral! y. Abdomen with but few apical spines. Tergal 

 plate VII without a posterior median process. Antepygidial bristles 3 on each 

 side in female, 1 in male. Female with 1 receptaculum seminis. Modified seg- 

 ments of male of 3 different types which are described under the 3 included 

 subgenera. 



Although the type species of this genus was originally designated 

 under the generic name of Odontopsylla* it was originally described 

 by C. Fox j 22. p. 19-5) in Dolichopsylla. The genus Dactylopsylla as 

 here recognized is composed of three subgenera. These subgenera are 

 practically identical except for the modified segments of the male. 



