ON THE GENUS AMPHIPSYLLA. 405 



5. Amphipsylla sibirica, Wagn. (1898). 



Pulex penicilliger, Grube, Middendorf's Reise, ii. p. 500(1852) 

 (female nee male ; Turuchansk). 



Ctenopsylla sibirica, Wagner, Hor. Soc. Ent. Boss. xxxi. 

 p. 578, t. 8, figs. 13, 14 (1898) (partim — Specimina ex Charkow 

 = rossica). 



Palceopsylla sibirica, Kothschild, Nov. Zool. xvi. p. 68, no. 10 

 (1909) (partim) ; Dampf, Zool. Jahrb., Suppl. xii. 3, p. 633 

 (1910). 



Amphipsylla sibirica, Wagner, Rev. Russe Ent. xii. p. 575 

 (1912) (" Turkestan " ex errore). 



Only the female is known. 



Turuchansk, Northern Siberia (Jenisseisk), not Turkestan a3 

 stated by Wagner in 1912 ; host Patorius sibirica. 



6. Amphipsylla casis, Jord. & Roths. (1911). 



Amphipsylla casis, Jordan & Rothschild, Proc. Zool. Soc. 

 Lond. p. 385, no. 10, text-figs. 118, 119 (1911) (Shensi). 



Both sexes are known. 



The eye is very small. The movable process of the clasper 

 (male) is narrowed at the apex, and the eighth sternite of the 

 male is exceedingly hairy, the hairs being thin, and many of 

 them very long. The seventh sternite of the female is slightly 

 emarginate. 



In the female the frons is but slightly rounded, the lower 

 portion not being curved backwards. The bristles of the second 

 antennal segment are at least half as long as the club. The 

 proportional breadth and length of the stylet are 1 : 2.5. 



Shensi, China, off Myospalax fontainieri. 



7. Amphipsylla pollionis, Roths. (1905). 



Ceratophyllus pollionis, Rothschild, Nov. Zool. xii. p. 171, 

 no. 15, t. 9, figs. 28, 31, 32 (1905) (Alberta). 



Both sexes are known. 



The movable process of the clasper of the male is triangular, 

 being broadest at the apex, and bears two black spiniform 

 bristles. The eighth sternite of the male bears about ten long 

 bristles and a few short ones. 



