34 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I23 



Microttis sp., M. calijornicus, M. longicandus, M. montarms, Peromyscus maiiicu- 

 latus). Colorado: El Paso County (P/j^Macowjrj sp.)- Idaho: Benewah County 

 (Microtus montamis nanus) ; Latah County {Microtus sp.) ; Lemhi County 

 {Phenacomys sp.). Montana: Ravalli County {Microtus longicaudus (=M. 

 mordax)). New Mexico: Catron County {Microtus sp.) ; Sandoval County 

 (M. pennsylvanicus astectis) ; San Miguel County (M. pennsylvanicus) ; Santa 

 Fe County (Neotoma sp.). Oregon: Benton County (Microtus sp.) ; Crater 

 Lake National Park (M. longicaudus) ; Estacada (Clethrionomys calijornicus 

 obscurus) ; Klamath County (C c. mazama) ; Linnton (Mustela sp.). Utah: 

 Cache County (Microtus sp., Peromyscus sp.) ; Iron County (Microttis longi- 

 caudus) ; Salt Lake County (M. montanus) ; San Pete County (M. longicaudus, 

 Peromyscus maniculatus) ; Utah County (Microtus sp.) . Washington: Spokane 

 County (Microtus sp.). 



PEROMYSCOPSYLLA CATATINA (Jordan, 1928) 



Figures 59-63, iii, 112 



Leptopsylla catatina Jordan, Nov. Zool., vol. 34, p. 186, fig. 10, 1928; vol. 35, 



p. 171, fig. 6, 1929. 

 Peromyscopsylla catatina I. Fox, Fleas of the eastern United States, pp. 84, 87, 



pi. 22, figs, no, 114, 115, 1940. — Jellison and Good, U. S. Publ. Health 



Serv., Nat. Inst. Health Bull. 178, p. 121, 1942. — Traub, Field Mus. Nat. 



Hist. Publ., zool. ser., vol. 29, p. 218, 1944. — Holland, Canada Dept. Agr. 



Techn. Bull. No. 70, pp. 175, 176, pi. 40, figs. 325-327, map 42, 1949. 



Head. — Mostly as in hesperomys except : upper genal spine the 

 longer (fig. 59) ; genal lobe (G.L.) very short, not one-half length of 

 lower genal spine ; second antennal segment with apical row of bristles 

 not reaching beyond second segment of club in both sexes. 



Thorax. — As in hesperomys except dorsal margin of mesonotum 

 lacking erect bristles. 



Abdomen. — With three antepygidial bristles in male (rarely two) ; 

 female usually with four, sometimes three. 



Male. — Eighth tergum with two rows of mediolateral bristles, first 

 of two or three rather short bristles, second of two or three very long 

 bristles. Eighth sternum (fig. 61) with apex broadly rounded, lacking 

 sinus ; bearing four subapical bristles, two of these very short ; mem- 

 branous process (M.P.) filamentous, prominent. Immovable process 

 of clasper (fig. 62, P.) with characteristic bristle on posterior margin 

 long. Digitoid or movable finger of clasper (F.) proximally somewhat 

 narrowed ; posterior margin evenly convex ; distal half of anterior 

 margin convex: with three long bristles on upper half of posterior 

 margin ; two thin bristles on anterior margin ; mesal and lateral sur- 

 faces with several short bristles. Distal arm of ninth sternum (fig. 63) 

 narrow, with subrounded apex; distal half sclerotized and with a 

 heavily sclerotized band running diagonally across from anterior 



