Family Hystrichopsyllidae Tiraboschi 81 



general structural details as in the male. Sternite VII divided 

 by a rounded sinus into two lobes, of which the upper does not 

 extend so far distad as the lower. Heads of the receptacula 

 seminis equal in size, globular, not much shorter than the 

 tails. For further details of the structure of the female geni- 

 talia, see Plate XXI, fig. 109. 



Eastern hosts. Short-tailed Shrew (Blarina brevicauda 

 talpoides (Gapper) ) , Meadow Mouse (Microtus pennsylvani- 

 cus pennsylvanicus (Ord) ) . 



Eastern locality. New York. 



Type material. Male holotype from Fairport, New York, on 

 Blarina brevicauda talpoides (Gapper) , and female allotype 

 from Mendon Ponds, Monroe County, New York, on Microtus 

 pennsylvanicus pennsylvanicus (Ord) in the N. C. Rothschild 

 Collection (British Museum) . 



STENOPONIA JORDAN AND ROTHSCHILD 

 Stenoponia Jordan and Rothschild, 1911, Proc. Zool. Soc. London, p. 391. 

 Genotype: Hystrichopsylla tripectinata Tiraboschi 



Frontal tubercle absent. A genal, a pronotal, and an abdo- 

 minal ctenidium present. Labial palpus short, not extending 

 much beyond the apex of the maxilla. Eye vestigial or absent. 

 Club of the antenna short. First abdominal tergite with a 

 ctenidium whose spines are as long as those in the pronotal 

 ctenidium; second to fifth abdominal tergites with rows of short, 

 stout teeth. Four to six antepygidial bristles present on a side in 

 the female; three or four in the male. Posterior border of the 

 tibia with numerous heavily pigmented bristles. Fifth tarsal 

 segment with four pairs of lateral plantar bristles and a basal 

 median pair. Females normally with only one receptaculum 

 seminis. Size large, four or five millimeters in length. 



This genus is represented in the East by a single species 

 which is found on various wild mice. 



Stenoponia americana (Baker) 



(Plate XXV, figs. 128, 130, 132) 



1898 Hystrichopsylla americana Baker, Ent. News, 10:37. 



1904 Hystrichopsylla americana Baker, Proc. United States Nat. Mus., 

 27:432. 



1905 Hystrichopsylla americana Baker, Proc. United States Nat. Mus., 

 29:137. 



1915 Stenoponia americana Rothschild, Ectoparasites, 1:30. 



