Bishopp — Some New North American Ixodidse. 201 



for Mr. Nathan Banks, the principal contributor to onr systematic 

 knowledge of the ticks of North America. 



This species would run to I. cooked or /. sculptus in Mr. Banks' table 

 in his Revision. However, it is easily separated from those species by 

 the much larger stigmal plates and somewhat shorter basal spine on 

 coxae 1. The dimensions of the stignial plates of I. cookei .vary from 

 330/* x 287 tt to 4<>7 m x 412 m. There are six or seven rows containing 

 120 to 150 goblets. The dimensions of the stigmal plates of I. sculptus 

 are much smaller than in I. cookei and the number of goblets fewer. 

 The shape of the basis capituli and porose areas is markedly different 

 from 7". sculptus and the lateral carinae are not distinct and incurved as 

 in that species. The basis capituli is much narrower than in 7". cookei 

 and the postero-lateral angles are less prominent than in that species. 



The specimens at hand are very uniform in most characters; the width 

 of the basis capituli varies from 41(>m to 439 M> and the size of the stigmal 

 plates from 502 m x 445 m to 560 m x 504 m, and the number of goblets 

 from about 440 to 500 per plate. The length of the first tarsi varies from 

 574 m to 653 m. Some of the females in the lot were about one-third 

 engorged; the bodies of these are light yellow and elongate. 



Ixodes kingi n. sp. 



Female. — Capitulum (Fig. 7), length 78U m ( froin tip of hypostome to 

 line connecting postero-lateral angles of basis capituli ) ; basis capituli dark 

 reddish brown, of medium size, width 574 m; postero-lateral angles promi- 

 nent; porose areas small, slightly broader than long, separated by nearly 

 their width; outline well defined, pits large and deep; palpi very short 

 and broad (488 m x 244 m), the greatest width occurring at the apex of 

 the second segment; this segment is only slightly narrowed back to its 

 basal articulation where it is abruptly constricted; first segment broad 

 and deeply cut out dorso-laterally and bears a prominent, broadly 

 rounded projection on its anterior margin ventro-laterally ; ventrally the 

 basis capituli is smooth and somewhat narrowed posteriorly. 



Scutum (Fig. 8), length 1.34 mm., width 1.2 mm., reddish brown, 

 darkest anteriorly, greatest width at about one-third of the distance from 

 anterior angles, distinctly narrowed behind, the postero-lateral margin 

 being slightly concave ; lateral carinae strong, running nearly to margin, 

 slightly behind middle of scutum; scutum distinctly depressed for the 

 entire length of the lateral carinae immediately mediad of those carinae; 

 surface of scutum densely and rather evenly covered with coarse punc- 

 tures. 



Legs amber in color, short and rather slender; tarsi abruptly narrowed 

 near apex; all coxae (Fig. 10) with a distinct apical tooth; coxae I with 

 a moderately long, stout basal spine. 



Stigmal plates (Fig. 9) rather small, 287m x 244m, transversely oval, 

 about 9b' goblets per plate, medium sized, not crowded together; a con- 

 siderable area postero- ventrally from macula without goblets; goblets 



