90 Fleas of Eastern United States 



hairlike setae. For further details concerning the structure of 

 the male genitalia, see Plate XXIV, figs. 122, 124. 



Female. Chaetotaxy of the head and general structure as in 

 the male except that four antepygidial bristles are present, two 

 short ones and two long ones. Sternite VII without a sinus. 

 Head of the receptaculum seminis much longer than wide. For 

 further details concerning the structure of the female genitalia, 

 see Plate XXIV, fig. 126. 



Records. FLORIDA — Jacksonville, January 25, 1934, on 

 Rattus norvegicus (Erxleben) , numerous specimens; Mel- 

 bourne, April 6, 1909, on same host, female; Tallahassee, July 

 12, 1937, on "Rattus alexandrinus," male; January 16, 1937, 

 on "Rattus rattus," two males, two females; January 20, 1937, 

 on "Mus musculus," male, two females; January 17, 1937, on 

 "Peromyscus gossypinus," male and female. LOUISIANA — 

 Jeanerette, February 23, 1927, on same host, male (Dikeman) . 

 SOUTH CAROLINA— Folly Beach, Charleston County, Janu- 

 ary 2, 1938, on "Mus species," two males (D. G. Nichols) . 



Eastern hosts. House-rat (Rattus norvegicus (Erxleben) ) , 

 House-mouse (Mus musculus musculus (Linnaeus) ) , Roof-rat 

 ("Rattus alexandrinus") , Cotton-rat ("Sigmodon hispidus") , 

 Black Rat ("Rattus rattus"), White-footed Mouse ("Pero- 

 myscus gossypinus") . 



Eastern localities. Florida, Georgia, Louisiana, Massachu- 

 setts, New York, North Carolina, Pennsylvania, Rhode Island. 

 Virginia, (Mexico, Europe). 



Type material. Twenty specimens from "Mus musculus" at 

 Sweden. Location of types not ascertained. 



NEARCTOPSYLLA ROTHSCHILD 

 Nearctopsylla Rothschild, 1915, Nov. Zool., 22:307. 



Genotype: Ctenopsyllus brooksi Rothschild 



Frontal tubercle absent. A genal and a pronotal ctenidium 

 present. Genal comb vertical composed of five spatulate spines. 

 Eye absent. Labial palpus composed of five segments. One or 

 two long antepygidial bristles present on a side. Fifth tarsal 

 segment of fore and middle legs with five pairs of lateral plantar 

 bristles; fifth tarsal segment of the hind legs with four pairs of 

 lateral plantar bristles. 



This genus is represented in the East by a single species 

 known from various small mammals. 



