Family Hystrichopsyllidae Tiraboschi 103 



vanicus pennsylvanicus (Ord) at Basin Pond, Mount Katahdin, 

 Maine, in the United States National Museum. 



Catallagia onaga Jordan 



(Plate XXVIII, fig. 145) 



1929 Catallagia onaga Jordan, Nov. Zool., 35:172, fig. 7. 



1933 Catallagia onaga Stewart, Jour. New York Ent. Soc, 41:255. 



Male. Chaetotaxy of the head and general structure essen- 

 tially as in C. borealis. Modified segments: Process of the 

 clasper large and broad, the outer margins with a number of 

 slender setae. Manubrium long, expanded distad and turned up. 

 Movable finger large, the upper portion produced over the 

 process of the clasper into a broad triangular "nose"; the poste- 

 rior margin armed with numerous slender setae. Penis broad 

 and bladelike, ending in a short process; spring not completing 

 a turn. For further details concerning the structure of the male 

 genitalia, see Plate XXVIII, fig. 145. 



Female. Undescribed. 



The above description and the accompanying illustration are 

 based upon a single specimen from "Blarina brevicauda" at 

 Adirondack Lodge, Essex County, New York, loaned through 

 the courtesy of Dr. Karl Jordan. 



Eastern host. Short-tailed Shrew ("Blarina brevicauda") . 



Eastern locality. New York. 



Type material. Two males from "Blarina brevicauda" at 

 New York in the N. C. Rothschild Collection (British Museum) . 



