198 Bishopp — Some New North American Ixodidas. 



capituli; slightly broader than long and separated by about half their 

 length ; the space between them with a pronounced rather irregular 

 groove ; palpi 574 // long, rather broad and heavy, entire surface rough- 

 ened ; third segment slightly longer than broad. 



Scutum, length 1.44 mm., width 1.41 mm.; reddish brown, broadest 

 slightly in front of the middle, broadly rounded behind; lateral carinae 

 present but not well denned, extending back a little behind widest part 

 of shield but not reaching the shield margin ; cervical grooves moderately 

 distinct, extending back to middle of scutum ; surface of scutum closely 

 covered with large deep punctures, more scattered toward tip, in regions 

 of cervical grooves and lateral carinae they are somewhat confluent, form- 

 ing rugose areas. 



Legs light reddish brown, translucent, rather long and stout, all tarsi 

 abruptly narrowed near tips, all coxae with a short posterior apical tooth 

 and with a trace of a tooth at the anterior apical angle; coxae I with a 

 long spine at base, slightly shorter than in I. cookei. 



Stigmal plates rather small, transversely oval, 330// x 287// and 344 /j. x 

 273/^; about 108 goblets per plate, irregular in size, some rather large, not 

 closely crowded together, six rows between the macula and marginal cells 

 at the widest point; macula nearly circular, located slightly antero- 

 ventrally from center; marginal cells large, nearly circular. 



Body pale yellow (slightly engorged), finely striate and with a few very 

 short pale hairs; postero-median groove shallow, running from near pos- 

 terior margin to a point opposite anus ; accessory grooves deep and broad, 

 running from near posterior margin nearly to shield, almost straight be- 

 hind, irregular in front; anal frame about two and a half times as long 

 as broad, sides nearly parallel, somewhat pointed in front of anus. 



Male. — Capitulum (Fig. 2), length 502 //(from tip of chelicerae (closed) 

 to line connecting postero-lateral corners of basis capituli); basis capituli 

 very dark brown, posterior and lateral edges black, greatest width at 

 base of palpi (358//) only slightly narrowed toward basal margin where 

 the width is 301 m ; the postero-lateral angles are not produced; the basal 

 margin only very slightly concave; dorsal surface of basis capituli dis- 

 tinctly rugose and with a few punctures; ventrally it has a semi-circular 

 ridge curving backward from near the base of each palpus, behind this 

 it is distinctly narrowed; palpi very short and broad (330// x 187//) ; 

 third segment but very little shorter than the second. 



Scutum, length 2.75 mm., width 1.54; very dark brown, some parts 

 almost black; sides nearly parallel, broadly rounded behind, less so at 

 anterior end ; the entire surface, with the exception of a few small areas 

 along the median line, closely covered with large punctures, at anterior 

 end these are somewhat confluent, producing rugosity ; a few very short pale 

 hairs near edges of scutum ; cervical grooves deep and short ; accessory 

 grooves shallow ; a series of broad depressions at intervals from the an- 

 terior ends of accessory grooves to near the cervical angles where surface 

 of scutum is decidedly uneven. 



