THE FLEAS OF NORTH AMERICA 29 



Catallagia wymani (C. Fox) 



Odontopsyllus wymani C. Fox, 1909, Ent. News 20 : 241, figs. 1-5. 

 Catallagia wymani Rothschild, 1915, Ectoparasites 1: 42. 



Type host. — Microtus calif ornicus (Peale) (California field 

 mouse). 



Type locality. — San Francisco, Calif. 



Range. — Known only from California. 



This species can be distinguished from all others of its genus by 

 the characters of sternal plate IX of the male, each posterior proc- 

 ess of this structure having but a single subapical, ventral spine and 

 being fringed throughout most of its ventral margin with a row of 

 subequal setae. 



The Genus Dolichopsylla Baker 



(Fig. 5, E, F) 



Dolichopsylla Baker, 1905, U. S. Natl. Mus. Proc. 29: 135. Monotypic. Type, 

 Ceratophyllus stylosus Baker. 



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

 setae, none of which is spiniform. Eyes, absent. Labial palpus long, extending 

 to or beyond apex of trochanter I, 5-segmented. Postantennal region of head 

 with 2 rows of setae. Pronotal comb with usual, long, black spines, which are 

 either narrowly rounded or angulate apically. Coxa III without a row or patch 

 of setae on inner surface ; segment I of posterior tarsus not longer than II, 

 III, and IV taken together; last segment of tarsus III with 5 pairs of lateral 

 plantar bristles, the first being shifted slightly ventrally. Abdomen with apical 

 spines not extending down almost to line of spirac'es. Tergal plate VII with 

 a posterior median process. Female with 4 antepygidial bristles on each side, 

 male with 3. Female with a single receptaculum seminis. Male with sternal 

 plate VIII produced posteriorly into a pair of semihyaline lobes, each having 

 a fimbriated ventral margin ; sternal plate IX much modified distally, with 

 crescentic inner vertical lobes, and a dorsoventrally thickened median apo- 

 physis ; movable finger of clasper broad, fiat, subtriangular, with long setae but 

 no pigmented spines. 



This genus contains but a single species. It is the type genus of 

 the family Dolichopsylliclae, the largest of all the families of 

 Siphonaptera. 



Dolichopsylla stylosa (Baker) 



(Fig. 5, E, F) 



Ceratophyllus stylosus Baker, 1904, U. S. Natl. Mus. Proc. 27: 418, pi. 14, figs. 



1-7, and pi. 15, figs. 1 and 2. 

 Dolichopsylla stylosa Baker, 1905, U. S. Natl. Mus. Proc. 29: 135. 



Type host. — Aplodontia rufa (Raf.) (mountain beaver). 



Type locality. — Astoria, Oreg. 



Range. — Known only from Oregon. 



This species is a large flea, females frequently measuring 6 mm. 

 in length. It is at once identified by its large size plus the generic 

 characters. In the United States National Museum there is a fine 

 series of six specimens of stylosa representing type material, each 

 specimen mounted on a separate slide. Excellent figures accompany 

 the original description of the species. 



