DESCRIPTIONS AND DETERMINATIONS OF SPECIES 47 



Anterior and middle pairs of legs of nearly the same size. Posterior pair 

 much larger and heavier, with broad heavy claw and with a stalked disk- 

 shaped appendage on the femur and tibia. No tergal and sternal plates. 

 Pleural plates present on first to eighth segments. 



Euhaematopinus abnormis Osborn. 

 Plate III, fig. 3 ; plate V, figs. 4 and 9 ; text fig. 16. 



Euhaematopinus abnormis Osborn, Bui. 5, n. s., U. S. DepL Agr., Div. Ent, p. 187, 



(1896). 

 Euhaematopinus abnormis Enderlein, Zool. Anz., vol. 28, p. 140, (1904). 

 Euhaematopinus abnormis Dalla Torre, Genera Insect., Anoplura, p. 16, (1908). 



Fig. 16. — Euhaematopinus abnormis Osborn; head of female. 



Through the kindness of Professor Osborn we have been permitted 

 to examine the type of this species. It is extremely close to Haematopi- 

 noides squamosus Osborn, the only point of difference being the charac- 

 ter of the posterior legs. These in Euhaematopinus are very short and 

 heavy and bear a stalked disk-shaped appendage on the femur and tibia, 

 while in Haematopinoides they are said to be normal. In all other re- 

 spects — shape of the head, sternal plate and pleural plates, character of 

 the antennae and absence of sternal and tergal plates — the species agrees 

 entirely with Osborn's description and figure of H. squamosus. In fact 

 we are strongly inclined to suspect that the two species are identical. The 

 question can only be cleared up by the finding of the types of H. squa- 

 mosus, unfortunately lost, or the re-discovery of the species. Euhaema- 

 topinus abnormis has been taken but once, from a mole, Scalops argen- 

 tatus^Scalopus aquaticus (Ames, Iowa). We have examined several 

 freshly-caught moles as well as several skins in the Stanford collection 



