94 MISC. PUBLICATION 5 00, U. S. DEPT. OF AGRICULTURE 



more or less spatulate spines. Eyes absent. Labial palpus composed of 5 

 segments. Pronotum with a comb of many long, slender, acuminate spines. 

 Anterior abdominal tergal plates, at least, with 2 or more apical spines. 

 Antepygidial .bristles present. Coxa III with a patch of spinelets on inner 

 surface. Fifth tarsal segment of legs I and II with 5 pairs of lateral plantar 

 bristles; fifth tarsal segment of leg III with 4 pairs of lateral plantar bristles. 



This genus contains four species. 



Nearctopsylla brooksi (Rothschild) 



Ctenopsyllus brooksi Rothschild, 1904, Novitates Zool. 11 : 649, pi. 15, figs. 86 and 88, 



and pi. 16, fig. 89. 

 Nearctopsylla brooksi Rothschild, 1915, Novitates Zool. 22: 307. 



Cotype hosts. — Martes americana (Turk) (marten), Mustela 

 longicauda Bonap. and M. cicognanii richardsonii (Bonap.)- (weasels) . 



Cotype localities. — Various localities in Alberta and British Co- 

 lumbia. 



Range. — Canada. 



The original description of this species is accompanied by illus- 

 trations of the male head and terminalia and the female terminalia. 



Nearctopsylla genalis genalis (Baker) 



(Fig. 8, D) 



Ctenophthalmus genalis Baker, February 1904, U. S. Natl. Mus. Proc. 27: 424. 

 Ctenopsyllus hygini Rothschild, September 1904, Novitates Zool. 11: 650, pi. 



15, fig. 85, and pi. 16, figs. 93, 94. 

 Nearctopsylla hygini Rothschild, 1915, Novitates Zool. 22: 307. 

 Nearctopsylla genalis Jellison and Good, 1942, U. S. Pub. Health Serv., Natl. Inst. 



Health Bui. 178 : 96. 



Type host. — The original description indicates Geomys bursarius 

 as the type host, but the type slide is labeled, "On ScalopsP Hence, 

 it seems very likely that the common garden mole, Scalopus aquati- 

 ons, is the type host of this species, rather than the pocket gopher, 

 Geomys bursarius. 



Type locality. — Agricultural College, Mich. 



Range. — Eastern part of the United States and Canada. 



This species has been redescribed and illustrated by I. Fox (&5, 

 pp. 91,175). 



Nearctopsylla genalis laurentina Jordan and Rothschild 



Nearctopsylla hygini laurentina Jordan and Rothschild, 1923, Ectoparasites 

 1 : 315, figs. 319, 321. 



Type host. — Mustela sp. (weasel). 

 Type locality. — New Brunswick, Canada. 

 Range.— Known only from New Brunswick. 



The original description of this species is accompanied by illustra- 

 tions of the male and female terminalia. 



Nearctopsylla hyrtaci (Rothschild) 



Ctenopsyllus hyrtaci Rothschild, 1904, Novitates Zool. 11 : 652. pi. 16, figs. 92, 95. 

 Nearctopsylla hyrtaci Rothschild, 1915, Novitates Zool. 22 : 307. 



Cotype hosts. — Mustela vison energumenos (Bangs) (mink) and 

 8 or ex ob scums Merr. (shrew). 



Cotype localities. — Cariboo and another unnamed locality in British 

 Columbia. 



