396 
Messrs Nuttall and Warburton, 
Note . — £ Digit (Fig. 5) 138 g long, internal article with triangular apex 
and point protruding outward, dorsal process large, extending midway along 
the article and ending in two teeth, external article bidentate. $ Digit 
(Fig. 5) 140 g long, internal article slender, notched distally, dorsal process 
small, external article with large basal tooth, two smaller teeth anterior to it 
and fine denticles distally. Spiracles of £ 370 p, 9 270 g long (Fig. 4). 
Near T. pilosus : differs in £ anal groove and absence of $ lateral groove. 
Ixodes kelloggi n. sp. 
Figures 6 — 8. 
Male, unknown. 
Female (fully fed), L. 7, W. 5‘2 mm. Body brown, with 
numerous white hairs. Scutum (Fig. 6) very long, 14 x TO mm., 
somewhat diamond-shaped, with a few conspicuous white hairs ; 
scapular angles sharp, no lateral grooves ; cervical grooves well- 
marked but not deep, slightly converging at first, then diverging 
to reach the margin nearly half-way along its postero-lateral 
border ; several large shallow punctations, in part confluent, from 
some of which hairs have fallen. Venter with numerous white 
hairs; spiracles slightly oval, brown, macula central; vulva be- 
tween coxa III ; anal groove with parallel sides, rather short, 
terminating far from the posterior border. Capitulum (Figs. 6, 7) 
Fig. 6. ? capitulum and scutum, x 20. 
of medium length ('8 mm.) ; base triangular, cornua slight ; porose 
areas large, transverse, of indefinite form ; palps rather long and 
narrow, article 2 the longest ; hypostome pointed, 3|3. Legs 
(Fig. 8) medium, coxa I with two spurs wide apart, coxae II — IY 
with short rounded outer spurs and inner edge blade-like ; tarsi 
tapering. 
Origin. Description based on 3 ?, one from a thrush (from 
Palo Alto, Cal. 18.95), one from Cyancitta stelleri frontalis (R. C. 
