bristles by a small gap. The stylet is about twice as long as it is proximally 

 broad, and bears two bristles besides the apical one. The receptaculum seminis 

 has a short globular head and a broad tail, which is thinnest at the base.* 



Length (mounted specimens) : <? 2.2 mm. ; $ 2.4 mm. 



Two <? 3' and 9 S 2 from Yen-an Fu, Shensi, taken off Mus confucianus 

 luticolor on December 22nd, 1908. 



" The host is a rock-inhabiting rat, very often with numerous ticks and 

 fleas. In some cases this rat is trapped in small caves in rocks where human 

 remains have been deposited, and it is possible that they feed upon these dead 

 bodies." 



" Yen-an Fu, a city situated in North Central Shensi." 



Fig. 2. 

 2. Neopsylla anoma spec. iwv. (Fig. 3 and 4). 



3 ? Similar to N. bidentatiformis Wagner (1893), but at once 

 distinguished by the hind coxa bearing a patch of short spines on the inner 

 surface. 



Head. — Frons evenly but so strongly rounded that the oral corner points 

 obliquely backwards. Eye absent, being only indicated by a bar projecting 



• For the sake of economy of space the receptacle is drawn lying in the eighth segment. 



198 



