Family Dolichopsyllidae Baker 71 



Megabothris wagneri (Baker) 

 (Plate XIX, figs. 96, 97) 



1904 Ceratophyllus wagneri Baker, Proc. United States Nat. Mus., 27:387, 

 PL XV, figs. 3-7. 



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

 1914 Ceratophyllus wagneri C. Fox, United States Public Health Ser. Hyg. 



Lab., Bull. 97, PL X, fig. 11; PL XIX, fig. 48. 

 1923 Ceratophyllus wagneri Dunn and Parker, United States Public 

 Health Ser., Rep. 38: 2774. 



1928 Ceratophyllus peromysci Stewart, Can. Ent, 60: 148, figs. 1, 2. 



1929 Ceratophyllus wagneri Jordan, Nov. ZooL, 35:35. 



1930 Ceratophyllus wagneri Jordan, Trans. IV Intern. Cong. Ent. (1928), 

 p. 498, figs. 7-9. 



1930 Ceratophyllus wagneri Stewart, Can. Ent., 62: 152. 

 1933 Monopsyllus wagneri Jordan, Nov. ZooL, 39: 78. 



Male. Preantennal region of the head armed with two rows 

 of bristles, the upper row consisting of five or six bristles, the 

 lower row of three much stouter and longer ones. Labial palpus 

 reaching to the apex of the fore coxa. Posterior margin of the 

 antennal groove with a series of small setae. Postantennal 

 region of the head armed with a marginal row of about five 

 bristles anterior to which are three more bristles near the 

 second antennal segment. Pronotum with a single row of alter- 

 nating bristles and small setae. Meso- and metanotum each 

 with two rows of bristles anterior to which are several others 

 either forming another row or irregularly arranged. Each ab- 

 dominal tergite with two rows of bristles. Metanotum and 

 anterior abdominal tergites with one to three stout dorsal teeth 

 on a side. Modified segments: Process of the clasper broad and 

 long, almost as long as the movable finger, armed apically with 

 one or two slender bristles. Movable finger broad and heavy, 

 armed on the posterior margin with three stout heavily pig- 

 mented spiniforms of which the lowest is the longest, being 

 about four times as long as the others. Manubrium short and 

 broad, ending bluntly. Penis long and slender, ending distally 

 in a long curved process; spring long, completing one or two 

 turns. For further details concerning the structure of the male 

 genitalia, see Plate XIX, fig. 97. 



Female. General structure and chaetotaxy essentially as in 

 the male. Receptaculum seminis vermiform, the head slightly 

 more expanded than the tail. For further details, see Plate 

 XIX, fig. 96, which was drawn from a specimen on "Mus 

 species" at Kelowna, British Columbia (A. Gate) , loaned 

 through the courtesy of Dr. Karl Jordan. 



