310 
The Genus Ixocles 
article 1 small, with slight internal angle; articles 2-3 club-shaped, 
the articulation distinct; article 2 about twice as long as 3; (Ventral 
aspect) palpal article 1 with protruding ventral angle; hypostome 
fairly pointed, with sharp teeth, 3|3, about 10 distinct teeth per outer 
file, fine denticles in front, with a short median unarmed ridge; basis 
capituli constricted rather far back; auriculae slight and rounded, 
basal margin straight. Venter : vulva between coxae III; anal grooves 
slightly ogival in front, converging slightly behind and extending to the 
posterior border; spiracle subcircular, with large eccentric macula. 
Fig. 12. Ixodes nuttalli Lahille 1913, nymph (N. 2514). Dorsum, capitulum in ventral 
aspect with coxae and trochanters, anus with anal grooves, spiracles and tarsus 4 
(G.H.F.N. del ). 
Legs : As in the d but with postero-internal border of coxa IV 
rounded. 
Nymph (Fig. 12): Recalling the $ in body-form and colour. Body 
1-5 x 0-9 mm. (Dorsal aspect) Scutum 0-74 x 0-56 mm., resembles that 
of the ? but with more rounded scapular angles. Capitulum markedly 
different from that of the 9, with lateral spines protruding outward 
outside the short rounded cornua. Palps far apart, with article 1 
projecting forward as a pointed process hollowed internally alongside 
the shafts of the chelicerae; articles 2-3 club-shaped, the articulation 
indistinct; (Ventral aspect) article 1 running backward and outward in 
a bidentate process which could be mistaken for an auricula; from the 
