NO. 4 FLEA GENUS PEROMYSCOPSYLLA — JOHNSON AND TRAUB 39 



Record of Specimens Examined 



Two males and two females, from Lemmus lentmus, Punta (Gunta?), Lapland, 

 Aug. 21, 1930. 



PEROMYSCOPSYLLA SILVATICA SPECTABILIS (Rothschild, 1898) 



Figures 64, 66, 73 



Typhlopsylla spectahilis Rothschild, Ent. Rec, vol. 10, p. 250, 1898. 

 Ctenopsylla spectahilis Wagner, Hor. Soc. Ent. Rossicae, vol. 36, p. 151, 1903. — 



Rothschild, Ent. Month. Mag., vol. 45, p. 184, pi. 2, fig. 2, 1909. 

 Lepfopsylla spectahilis Waterston, Ent. Month. Mag., vol. 50, p. 165, 1914. — 



Rothschild, Ent. Month. Mag., vol. 51, p. 82, pi. 13, fig. 81, 1915. 

 Ctenopsylla silvatica Wagner, Akad. Nauk S.S.S.R. Zool. Inst., Parazitol. 



Sbornik (Mag. Parasitol. Mus. Zool. Acad. Sci.), Leningrad, vol. i, p. 147, 



pi. 13, fig. 91, 1930 (sinks spectahilis). 

 Lepfopsylla spectahilis Jordan, Nov. Zool., vol. 38, p. 257, 1932. 

 Pcromyscopsylla silvatica spectahilis Hopkins, Journ. Washington Acad. Sci., 



vol. 42, No. II, p. 364, 1952. 



Head, thorax, and abdomen. — As in s. silvatica. 



Male. — Sternum 8 (fig. 66) with truncate apex bearing diagonal 

 row of three bristles, one at apex much the shortest ; row of three or 

 four close-set bristles at base of shallow ventral sinus. Movable finger 

 or digitoid of clasper (fig. 64, F.) more clavate than in other sub- 

 species due to dorsal expansion and proximal constriction of caudal 

 margin; bearing at dorsocaudal angle three long marginal bristles, 

 lowest slightly sinuate in specimen examined ; a few smaller bristles 

 on dorsal and posterior margins ; several small mesal and lateral 

 bristles other than marginals. Distal arm of ninth sternum (fig. 73) 

 with posterior (ventral) margin quite convex, bearing three or four 

 long bristles and several shorter ones ; apex subacute with about three 

 to four small bristles ; some small lateral bristles ; the basal half of 

 anterior (dorsal) margin semimembranous. 



Details of female modified segments indistinguishable from J. 

 silvatica. 



Types. — From Clethrionomys ( = Hypudaeus) glareolus; Scotland, 

 North Berwick. 



The range of s. spectahilis is the British Isles. 



Records of Specimens Examined 



One male and two females from Microtus agrestis, Bagley Wood, England, 

 October 1926, C. E. Eaton. One male and three females from Microtus sp., 

 Bagley Wood, near Oxford, England, 1928. 



