60 
Notes on Ticks 
Ixodes putus (Pickard-Carabridge, 1878). 
Larva (Fig. 9). Closely resembles the nymph in all essential 
characters^ Scutum : 1. 0'4 mm., narrow, approximating more to that 
of the $ in shape. Larvae, when gorged, attain 1'5 x 1'2 mm. 
Capitulum: 1. 0’2 mm. 
Egg: 1. 0'6 mm., long, golden yellow, blunt oval. 
Fig. 9. Ixodes putus (Pickard-Cambridge, 1878) larva, part of dorsum, capitulum in 
ventral aspect, coxae, tarsus 3. (G. H. F. N. del.) 
Described from numerous specimens found by me, 2. vii. 1911, with 
, $ and o in nests on cliffs- inhabited by marine birds, chiefly 
guillemots. Worm’s Head, Gower, South Wales. No unfed specimens 
of larvae were found and the eggs failed to hatch out. Types in 
Cambridge (N. 1307 b.). 
I shall refer to the biology of this species in a future note. 
' For description of ^ $ and o, and figures thereof, see Ticks, Part II, pp. 2.56-261. 
In this connection I would note that an American reviewer of Part II has criticized our 
descriptions of the immature stages because of their brevity. It is however obvious that 
lengthy descriptions are unnecessary when accurate figures form an integral part of a 
description and the immature tick possesses the essential characteristics of more adult 
forms which have been adequately described elsewhere. The literature on ticks is alreadj' 
overburdened with long descriptions of such a vague character that they are of no use to 
the systematist. 
