0\ SOME NEW CHINESE FLEAS. 365 



PAPEES. 



19. Some New Siphonaptera from Cliina. Bj Karl Jordan, 

 Ph.D., F.E.S., and the Hon. N. Charles lioTHSCHiLD, 

 M.A., F.Z.S., F.E.S. 



[Received and Read March 7, 1911.] 

 (Text-figs. 104-124.) 



The following fleas were collected by Mr. M. P. Anderson in 

 the provinces of Shensi, Kansu, and Sze-elnien, China. The 

 collection contains altogether 17 species, of which no fewer than 

 1 3 are new. Some of these are closely related to species described 

 from Turkestan or European Russia, and may possibly be only 

 geographical developments, others represent very distinct types 

 not very nearly allied to anything known from other countries. 



1. Arch^opsylla sinensis, sp. n. (Text-figs. 104, 105.) 



J ? . Agrees in both sexes very closely with A. erinacei 

 Bouche (1833) from Europe, differing chiefly in the following 

 points : — 



The tooth situated in ^. erinacei at the apex of the genal lobe of 

 the head below the antennal groove is either absent from sinensis 

 or small and very pale. The receptaculum seminis of the female 

 (text-fig. 105) is slightly smaller than in erinacei, and the modified 

 abdominal segments of the male exhibit some easily recognisable 

 characteristics as follows : — The ninth tergite, which in erinacei 

 has a short, broad, and curved manubrium, bears a broad and 

 straight manubrium with rounded apex (text-fig. 105, IX. t.). The 

 ventral margin of the eighth sternite is not denticulate. The large 

 " movable process (E) of the clasper is much shorter than in erinacei, 

 and its ventral edge, instead of being continued downwards as a 

 broad thin flap which is slit at the margin into filaments, bears 

 only a narrow membranaceous appendage. The ninth sternite 

 (IX. st.) is less rounded at the apex than in erinacei nrxd has more 

 bristles. As this sternite is partly concealed in our specimens 

 by other organs, we are not quite certain that our figure gives the 

 exact outline of it. 



A small series of both sexes from Yu-lin-fu, Shensi, 40C0 ft., 

 taken off Erinaceus mioclon. 



2. Ceratophyllus crispus, sp. n. (Text-figs. 106-108.) 



cJ $ . The male of this species shows some very remarkable speci- 

 alizations not observed in any other known flea, the second segment 

 of the antenna bearing in that sex some very long and strong bristles 

 which extend far beyond the long club, and the posterior margin 

 of the hind coxa being incurved at some distance from the base. 

 Moreover, the hind tarsus of the male exhibits a development of the 

 bristles which is only approached to some extent in the males of 

 two species of the genus Vermlpsylla. The female of C. crispus 



