"58 Fleas of Eastern United States 



Female. In the specimen regarded as the female type there 

 is an ocular row of three bristles, but the series of weak bristles 

 along the anterior margin of the antennal groove is lacking. 

 Three well-developed antepygidial bristles present on a side, 

 the middle one the longest. Sternite VII bisinuate, the upper 

 sinus very broad and shallow (Plate XIV, fig. 69) . 



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

 1928, on Glancomys sabrinus macrotis (Mearns) , male and fe- 

 male (Harper and Hamilton) . 



Eastern hosts. Flying Squirrel (Glancomys sabrinus mac- 

 rotis (Mearns) and G. volans volans (Linnaeus) ) , Woodchuck 

 ("Arctomys monax") . 



Eastern localities. New York, Maine, (British Columbia) . 



Type material. Male and female from Newport, Herkimer 

 County, New York, on "Arctomys monax," in the United States 

 National Museum. 



ORCHOPEAS JORDAN 

 Orchopeas Jordan, 1933, Nov. Zool., 39:71. 



Genotype: Pulex wickhami Baker 



General structure essentially as in Ceratophyllns except that 

 the pronotal ctenidium consists of nine or ten spines on a side 

 and the fifth tarsal segment of each leg is armed with four pairs 

 of lateral plantar bristles and a basal and an apical submedian 

 pair. Movable finger of the male ham-shaped, much narrower 

 basally than distally where it is armed with a row of four to 

 seven heavily pigmented spiniforms. Head of the receptaculum 

 seminis of the female more or less barrel-shaped. Males with 

 two stout antepygidial bristles and one minute bristle on a side; 

 females with three stout antepygidial bristles, the middle the 

 longest, on a side. 



This genus is represented in the East by four species which 

 parasitize the common small mammals. They may be separated 

 by the illustrations in Plates XV and XVI and by the following 

 key: 



Key to the Eastern Species of Orchopeas 



1. Preantennal region with two distinct rows of bristles 2 



Preantennal region with but one distinct row of bristles 3 



2. Postantennal region with three bristles in addition to those of the 



marginal row O. leucopus 



Postantennal region with but two bristles in addition to those of the 

 marginal row O. sexdentatus 



