NOVITATES ZOOLOGICAE XXI. 1914. 



241 



A short series from near Oroya, Pern, above 12,000 ft., June 4, 1913, off 

 Vizcacha. 



2. Parapsyllus sentus spec. nov. (text-fig. 3). 



S . A single specimen found on the same host as P. danger differs so con- 

 siderably in the modified abdominal segments that we consider it to represent a 

 distinct species. The "finger" F (fig. 3) is narrower than in P. clariger. This 

 exopodite is so concealed by the eighth tergite that the exact outline of the apical 

 portion cannot be made out very clearly, and therefore is only indicated by dots in 

 our figure. The two processes of the clasper are shorter than in P. danger. The 

 left process is somewhat boot-shaped, with the toes turned upwards. It bears four 

 stout bristles, which are shorter and thicker than in P. danger. The right process 



Fia. 3. — Parapsyllus seiifits. 



is truncate, with the angles completely rounded. It also bears four stout bristles, 

 which are placed erect on the plane of the process and tlierefore are foreshortened in 

 a lateral view of the specimen (as in our figure). The horizontal arm of the ninth 

 Bternite(lX. st.) is evenly rounded ventrally, almost straight dorsally, and has only a 

 small number of minute hairs. The number of bristles on this sternite is not the 

 same on the right and left sides of the specimen. The eighth sternite (VIII. st.) has 

 only one process instead of the two of P. danger. 



One (J from near Oroya, above 12,000 ft., June 4, 1913, off Vizcacha. 



3. Parapsyllus xenurus spec. nov. (text-figs. 4, 5). 

 S ?. This species agrees with P. coxalis Eoths. (1909) in bearing on the fore- 

 coxa a transverse antemedian row of bristles which are thicker and longer than 

 the other coxal bristles. None of the other known Parapsylli exhibit this 



