Family Hystrichopsyllidae Tiraboschi 93 



1929 Doratopsylla blarinae Jordan, Nov. Zool., 35:177. 

 1933 Doratopsylla blarinae Jordan, Nov. Zool., 39: 63. 

 1933 Doratopsylla blarinae Stewart, Jour. New York Ent. Soc, 41:280. 



Male. Preantennal region of the head with two rows of 

 bristles; upper row with five bristles, lower row with three 

 much longer bristles and two small setae. Genal ctenidium 

 consisting of four spines of which the last two are the longest. 

 Second antennal joint with three or four slender setae. Post- 

 antennal region of the head with three rows of long bristles, of 

 which the first consists of three bristles, the second of four, and 

 the third of five or six. Pronotum with a single row of bristles 

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

 metanotum each with two irregular rows of bristles. Each 

 abdominal tergite armed with two irregular rows of bristles; 

 the anterior tergites further armed with a single short, stout 

 tooth on a side. Three antepygidial bristles present on a side; 

 of these the middle is by far the longest. Modified segments: 

 Process of the clasper divided into two lobes, the anterior very 

 small with three bristles, of which the most dorsal is longest 

 and stoutest. Posterior lobe much more conspicuous, rather 

 long and curved dorsad. Movable finger very long and slender, 

 armed with several slender bristles on its posterior margin 

 (Plate XXVI, fig. 137). Manubrium short and heavy, roughly 

 triangular and ending in a curved point. Penis not much 

 longer than the manubrium, curved and bladelike; spring long 

 but not completing a turn. Posterior process of sternite IX ex- 

 panded apically, the posterior margin with a short spinelike 

 bristle, above which are several other more slender bristles. 



Female. Chaetotaxy of the head essentially as in the male 

 (Plate XXVI, fig. 134) . Sternite VII without a distinct sinus. 

 Tail of the receptaculum seminis very short; head long and 

 broad, more or less oval in outline. For further details con- 

 cerning the structure of the female genitalia, see Plate XXVI, 

 fig. 135. 



Records. CONNECTICUT— Woodstock, September 5, 1927, 

 on Blarina brevicauda talpoides (Gapper) , female (F. Harper) . 

 DISTRICT OF COLUMBIA — Washington, September 20, 

 1929, on "Peromyscus leucopus," male (J. C. Jones) . MAINE — 

 Toque Pond, August 21, 1928, on "Sorex palustris albibarbis" 

 female (F. Harper) . MARYLAND— Cabin John, June 1, 1932, 

 on "Blarina brevicauda," two females; Chillum, May 19, 1932, 

 on same host, two males; College Park, June 16, 1932, male; 

 April, 1932, on same host, male and female; Silver Spring, 



