174 



Genus Ixodes 



Described from a % 1 found on a squirrel, District of Columbia, 

 U.S.A., kindly loaned by the U.S. Department of Agriculture, being 

 one of the specimens doubtfully attributed by Neumann to /. hexagonus 

 var. inchoatus (=1. canisuga). It is somewhat allied to /. canisuga, 

 but can easily be distinguished from it by the different shape of the 

 basis capituli, the more posterior position of the lateral angles of the 

 scutum, the very small spiracles, and other minor characteristics. 



This species occurs in Canada and the United States, having been 

 found, according to Banks, on the red squirrel in Guelph, Ontario, 

 Canada; Salineville and Waseon, Ohio; Portland, Michigan ; Ithaca, 

 New York ; District of Columbia ; and on the fox in Denver, Colorado. 



12. IXODES PRATTI Banks, 1908. 



Fig. 168 (original). 

 Lit. and Icon. : Banks, N., 1908, pp. 27, 28, PI. IV, Figs. 1, 3-5. 



Male: (according to Banks, 1908, p. 28) " L. 2 mm. Body very 

 slender, more than twice as long as broad, dark brown, and very hairy ; 

 a deeply impressed lateral and posterior groove ; surface densely 

 punctate. Capitulum not broader behind than long in middle, sides 

 parallel, posterior angles not prolonged ; palpi short, but longer than 

 width of capitulum, the third joint a little longer than broad, legs 

 rather short, coxae I with a very long, slender spine behind, II with 



Fig. 168. I. pratti $ : capitulum and scutum ; capitulum in ventral aspect, tarsus 4 

 (claws missing in specimen), spiracle, coxae. Specimen from Death Valley, California, 

 determined by N. Banks. Eeceived from U.S. Dept. of Agricult. (N. 716. Original, 

 G. H.F.N, del.) 



1 The tube containing the specimen also contained three labels bearing the inscriptions : 

 (1) No. 47- 3 , Ixodes americanus Marx, Squirrel, D.C. (Marx, coll.) ; (2) Ixodes hexagonus 

 var. inchoata Neumann (Nn. det.) ; (3) Ixodes marxi Banks. 



