Family Hystrichopsyllidae Tiraboschi 87 



1937, on Peromyscus leucopus fusus Bangs, male; October 29, 

 1937, female (C. N. Smith) . 



Eastern host. White-footed Mouse (Peromyscus leucopus 

 noveboracensis (Fischer) , etc.) . 



Eastern localities. Iowa, Massachusetts. 



Type material. Female holotype from Peromyscus leucopus 

 noveboracensis (Fischer) at Dubuque, Iowa, and male allotype 

 (described above) from Edgartown, Massachusetts, in the 

 United States National Museum. 



Peromyscopsylla catatina (Jordan) 



(Plate XXII, figs. 110, 114, 115) 



1928 Leptopsylla catatina Jordan, Nov. Zool., 34: 186, fig. 10. 



1929 Leptopsylla catatina Jordan, Nov. Zool., 35: 171. 



1933 Ctenopsyllus catatina Stewart, Jour. New York Ent. Soc, 41:259. 

 1937 Leptopsylla catatina Jordan, Nov. Zool., 40:285. 



Male. Bristles of the pre- and postantennal regions of the 

 head arranged essentially as in P. hesperomys. Upper of the 

 two genal spines more recurved and extending further distad 

 than the lower. Genal process not markedly spatulate, and ex- 

 tending slightly more distad than the upper genal spine, if at all 

 (Plate XXII, fig. 114) . Pronotum with a single row of bristles 

 and a ctenidium of about thirteen spines on a side. Meso- and 

 metanotum each with four rows of bristles. Metanotum and 

 first five abdominal tergites armed with three or four short 

 stout dorsal teeth on a side; sixth abdominal tergite armed with 

 one to three such teeth on a side. Three antepygidial bristles 

 present on a side, the middle by far the longest. Modified seg- 

 ments: Upper region of the clasper more or less triangular, no 

 well-defined process set off. Movable finger with the posterior 

 margin more or less rounded, the anterior margin also convex 

 but to a lesser degree. Posterior margin of the movable finger 

 armed with two or three long bristles and several smaller ones. 

 Manubrium slender, about as long as the penis. Penis broad 

 and bladelike, its spring not long. Sternite IX expanded dis- 

 tally, the apex subacuminate; armed on the posterior margin 

 with five or six long bristles and many smaller ones. For 

 further details concerning the structure of the male genitalia, 

 see Plate XXII, fig. 115. 



Female. General structure essentially as in the male. Abdo- 

 minal sternite VIII armed with numerous bristles varying in 

 size. Sternite VII with a small angular lobe projecting poste- 

 riorly which varies in shape, the margin below the lobe convex 



