Family Puiicldae Stephens 17 



the other is situated at the base of the maxilla. Several small 

 setae situated between the two bristles. Labial palpus reaching 

 almost to the apex of the fore coxa. First antennal segment 

 with about ten bristles of various sizes; second antennal seg- 

 ment with about four long bristles. Posterior to the third an- 

 tennal segment is a series of about twelve small setae. Bristles of 

 the postantennal region arranged in three rows; first and sec- 

 ond row reduced to one bristle each, the third row consisting 

 of five long bristles which alternate with four small setae (Plate 

 V, fig. 20). Each segment of the thorax armed with a single 

 row of long bristles alternating with small setae. Modified 

 segments: Clasper with two processes; one narrow and curved 

 outward, the other more or less in the form of a flap, its upper 

 margin with a number of bristles. Penis bladelike ending in a 

 sharp point; spring long but not completing a single turn in the 

 specimens examined. Posterior arm of sternite IX expanded 

 apically and armed with a number of bristles. For further 

 details concerning the structure of the male genitalia, see Plate 

 V, fig. 16. 



Female. Chaetotaxy of the head and general structure essen- 

 tially as in the male. Receptaculum seminis large and conspicu- 

 ous; basal portion of the tail almost as wide as the head. For 

 further details of the structure of the female genitalia, see 

 Plate V, fig. 18. 



Records. DISTRICT OF COLUMBIA — Washington, Sep- 

 tember 17, 1902, on "Mus domestica," male (H. S. Barber); 

 August 29, 1935, on "rats," male, three females (C. N. Smith) . 

 FLORIDA — Jacksonville, January 25, 1934, on Rattus nor- 

 vegicus (Erxleben) , numerous specimens; Tallahassee, June 



15, 1937, on "Rattus alexandrinus," female, two males; January 



16, 1937, on "Rattus rattus," male. GEORGIA— Thomas ville, 

 July 18, 1934, on Sigmodon hispidus hispidus Say and Ord, 

 three females (E. V. Komarek) ; Newton, May 24, 1937, on 

 "wharf rat," numerous specimens (B. V. Travis); Valdosta, 

 December 20, 1935, on "Rattus alexandrinus," male, two fe- 

 males; November 29, 1935, on "roof rat," female (H. Hixson) . 

 IOWA— Ames, September 27, 1934, on "cottontail rabbit," 

 three males, three females (E. F. Knipling) . LOUISIANA— 

 New Orleans, on "rats," two females (Hobenhoffer) . MARY- 

 LAND — Berwyn, "in flour," July, 1937, male, two females; 

 Baltimore, on Rattus norvegicus (Erxleben) , numerous 

 specimens. RHODE ISLAND — Providence, November 27, 

 several specimens (S. H. Robinson) . 



