Family Ischnopsyllidae Wahlgren 109 



Female. Preantennal region of the head with a conspicuous 

 row of bristles on the frons extending from the base of the genal 

 spines to the antennal groove. Bristles of this row of various 

 sizes, there being two long ones near the antennal groove, three 

 of the middle size, and six very small ones. One large bristle 

 below this row and near the antennal groove; another situated 

 above the second genal spine. Ocular bristle situated above the 

 eye near the second antennal segment. Spines of the genal 

 ctenidium long, pointed, slightly recurved, the posterior much 

 longer than the anterior. Labial palpus five-segmented, very 

 short. Postantennal region of the head with two irregular rows 

 of about fourteen small setae near the posterior margin of the 

 antennal groove, and four or five rows of long bristles irregu- 

 larly arranged. Particularly outstanding are three long bristles 

 which form a diagonal across the postantennal region of the 

 head. Pronotum armed with two or three irregular rows of 

 bristles and a ctenidium of twelve or thirteen long spines. 

 Meso- and metanotum each with four or five irregular rows of 

 bristles. Each abdominal tergite armed with two or three 

 irregular rows of bristles. In addition, the anterior abdominal 

 tergites armed with one stout dorsal tooth on a side. Margin of 

 sternite VII more or less rounded, without a deep sinus. Head 

 of the receptaculum seminis oval, half again as long as wide. 

 For further details concerning the structure of the female 

 genitalia, see Plate XXXI, figs. 162, 166. 



Male. Chaetotaxy of the head essentially as in the female 

 (Plate XXXI, fig. 165) . Hairlike setae on the first tarsal seg- 

 ment of the hind legs much longer and more numerous than in 

 the female. Posterior end of the abdomen armed with four 

 large bristles situated on conical protuberances (Plate XXXI, 

 fig. 163). Sternite IX with a ventral process which is armed 

 with a stout spiniform bristle. Clasper markedly incurved 

 dorsally. Manubrium finger-like. Movable finger somewhat in 

 the shape of a hammer, its posterior margin armed with several 

 bristles. Penis broad and blunt; spring not completing a single 

 turn (Plate XXXI, fig. 164) . 



Records. FLORIDA— Gainesville, April 25, 1929, on "Myotis 

 austroriparius" (= M. lucifugus (LeConte)), female (H. B. 

 Sherman) ; Leon County, August 27, 1934, on "free-tailed bat," 

 female (E. V. Komarek) ; Tallahassee, May 23, 1936, on 

 Tadarida cynocephala (LeConte) , male and female (E. V. 

 Komarek) . GEORGIA— Thomasville, June 26, 1936, on "free- 

 tailed bat." male and female. 



