1916] 



Ferris — Notes on Anoplvra and MaUophaga 



101 



tergites and sternites chitinized is readily distinguishable by the 

 difference in the pleural plates. The new variety is evidently 

 rather close to N. sciurinus (Mjoberg) from Sciurus vulpinus 

 (Europe) and may prove to be identical with that species but the 

 description of the latter is too incomplete to permit of any cer- 

 tainty. Host of the type, Sciurus douglasi albolimbatus. 



Neohaematopinus sciuropteri Osborn. 



Numerous specimens from Glaucomys sabrinus lascivus (Yosem- 

 ite National Park, Calif.), better known as Sciuropterus. The 

 description of this species was based upon the male and apparently 

 but two specimens of the species have heretofore been known. The 



Fig. 1. Neohoematoptnus sciuropteri (Orb.) ; 

 A, antenna of female, B, antenna of male, 

 vertical side. 



Fig. 2. Neohcematopim/s scinr- 

 opteri (Orb.); vertical side of head. 



figures in "Anoplura and MaUophaga of North x\merican Mam- 

 mals" were made from a single imperfect male and prove to be 

 wrong in certain respects. There is no spine on the posterior 

 margin of the first antenna! segment, as was there figured, this 

 spine really being on the head immediately at the base of the 

 antenna. Furthermore the sternal plate has the posterior lateral 

 angles produced into slight points instead of having the posterior 

 margin straight. 



The absence of a spine on the posterior margin of the first an- 

 tennal segment leaves the emarginate posterior margin of the 

 second tergite in the male as the only positive character separating 

 this species from Polyplax. The female can be separated from 



