Gr. H. F. Nuttall 
309 
dorsal and one ventral 1 ; coxae II—III, each, with two similar short and 
postero-external spurs; coxa IV with short postero-internal spur and 
postero-external tuberosity; trochanters unarmed; tarsus 4 tapering, 
distal pseudo-article about twice as long as the basal; pads small. 
Female (Fig. 11) : Hard parts dark chestnut brown. (Dorsal aspect) 
Body, when unfed, long and narrow, 3-7 x 2-0 mm., with scutum 
covering about half the length; marginal fold broad, prominent, com¬ 
plete, hairy; some scattered hairs on the abdomen. Scutum long oval, 
Fig. 11. Ixodes nuttalli La hi He 1913, $ (N. 2517). Dorsum, capitulum in dorsal and 
ventral aspects, anus with anal grooves, coxae with trochanters, spiracle and 
tarsus 4 (G.H.F.N. del.). 
1*9 x 1-3 mm., with scapular angles not pointed, emargination normal, 
lateral ridges prominent, and, as do the cervical grooves, extending 
far back to the postero-lateral borders; cervical grooves distinct, 
converging, then diverging slightly behind; the whole scutum somewhat 
rugose, especially in the lateral fields; posteriorly somewhat pointed; 
a few moderate punctations and fine hairs. Capitulum with base about 
as long as broad, roughly triangular, dorsal ridge sharp and sinuous, 
slight cornua; porose areas near the ridge, depressed, subtriangular, 
pointed forward, the interval narrow and prominent. Palps with 
1 Recalling Ixodes Caledonians Nuttall 1910 {Parasitology, iv. 177-179, Fig. 1). 
Parasitology vm 20 
