22 Fleas of Eastern United States 



bristles longer. Postantennal bristles arranged in three irregu- 

 lar rows; first row consisting of two or three bristles, the second 

 of two, and the third of four or five. Pronotum with a single 

 row of bristles and a ctenidium of six or seven spines on a side. 

 Meso- and metanotum each armed with a single row of bristles. 

 Modified segments: Clasper with two movable processes 

 which, together with the apical portion of the posterior arm of 

 sternite IX, are more or less enclosed in a membranous flap the 

 margin of which is dorsally provided with hairlike setae. An- 

 terior movable process of the clasper more or less straight, 

 about as long as the curved posterior process; the latter with 

 five or six small bristles along the posterior margin. Manubrium 

 finger-like, its termination rounded. Penis bladelike, broader 

 distally than posteriorly; spring long and prominent, but not 

 completing a single turn in the specimens examined. Posterior 

 arm of sternite IX broadly expanded apically where it is armed 

 with a conspicuous patch of dark setae. Sternite VIII tapering 

 to a point apically where it is curved outward and armed with 

 three or four bristles on the outer margin. For further details 

 concerning the structure of the male genitalia, see Plate III, 

 fig. 7. 



Female. Chaetotaxy of the head (Plate III, fig. 10) and gen- 

 eral structure essentially as in the male. Mandible longer than 

 in the male, reaching beyond the apex of the fore coxa. Sternite 

 VII without a distinct sinus. Head of the receptaculum seminis 

 slightly longer than broad, much broader than the tail. For 

 further details concerning the structure of the female genitalia, 

 see Plate III, fig. 6. 



Records. ARKANSAS— Imboden, March, 1925, on "rabbit," 

 male, three females (B. C. Marshall) . CONNECTICUT— No 

 specific locality, September 3, 1936, on "New England cotton- 

 tail," male, four females (J. E. Shillinger). DISTRICT OF 

 COLUMBIA— Washington, January 29, 1931, on "cottontail," 

 male (Alva Nye). FLORIDA— Monticello, May 2, 1937, on 

 Lynx rujus fioridanus (Rafinesque) , male and female (E. V. 

 Komarek) . GEORGIA — Four miles west of Folkstown, April 

 13, 1938, on SylvilagiLS fioridanus mallurus (Thomas) , two 

 males (F. Harper) ; Newton, April 28, 1937, on same host, two 

 females; April 1, 1937, on Vulpes fulva (Desmarest) , male and 

 female; July 26, 1937, on "wharf rat," two females (B. V. 

 Travis). IOWA— Osceola, December 21, 1935, on "cottontail 

 rabbit," female; August 3, 1936, on "rabbit," male and female 

 (G. S. Cantonwine); Ames, November 5, 1934, on "cottontail 



