70 Fleas of Eastern United States 



Type material. Female holotype from Canada, on "Tamias 

 striatus" in the N. C. Rothschild Collection (British Museum) . 



Megabothris quirini (Rothschild) 



(Plate XVII, fig. 87; Plate XVIII, figs. 90, 94) 



1905 Ceratophyllus quirini Rothschild, Nov. Zool., 12: 163, PI. VI, fig. 1. 



1905 Ceratophyllus quirini Baker, Proc. United States Nat. Mus., 29:133. 



1929 Ceratophyllus quirini Jordan, Nov. Zool., 35:174. 



1933 Ceratophyllus quirini Stewart, Jour. New York Ent. Soc, 41:256. 



1933 Megabothris quirini Jordan, Nov. Zool., 39:77. 



1937 Megabothris quirini Jordan, Nov. Zool., 40: 284. 



Male. Preantennal region of the head armed with two rows 

 of bristles; the upper row consisting of about seven bristles, the 

 lower row of three much longer ones. Posterior margin of the 

 antennal groove with a series of small setae. Postantennal 

 region armed with three bristles in addition to those of the 

 marginal row (Plate XVIII, fig. 90) . Other details of general 

 structure essentially as in M. asio. Modified segments: Process 

 of the clasper long and finger-like, its apex rounded. Movable 

 finger large, concave between the outer angle and the apex, 

 and bearing on the angle a long heavy spiniform in front of 

 which is another much shorter one. Another distinct heavily 

 pigmented bristle at the apex. For further details concerning 

 the structure of the male genitalia, see Plate XVII, fig. 87. 



Female. General structure and chaetotaxy essentially as in 

 the male. Sternite VII in the single specimen available without 

 a deep sinus, receptaculum seminis essentially as in other 

 species of the genus. For further details regarding the structure 

 of the female genitalia, see Plate XVIII, fig. 94, which is drawn 

 from a single specimen taken at Atlin, British Columbia, on 

 "Microtus pennsylvanicus drummondi" loaned through the 

 courtesy of Dr. Karl Jordan. 



Record. MAINE— Windy Pitch, Mount Katahdin, August 23, 

 1928, on Glaucomys sabrinns macrotis (Mearns) , male (W. J. 

 Hamilton, Jr.) . 



Eastern hosts. Jumping Mouse (Zapus hudsonius campes- 

 tris Preble, and "Zapus insignis") , Flying Squirrel (Glaucomys 

 sabrinus macrotis (Mearns) ) . 



Eastern localities. Maine, Minnesota, New York, 

 (Canada) . 



Type material. Five males from Red Deer, Alberta, on 

 "Evotomys gapperi" and "Evotomys sa^uratus" in the N. C. 

 Rothschild Collection (British Museum) . 



