200 



Genus Ixodes 



Fig. 192. /. caledonicut o : capitulum and scutum with dorsal aspect of first leg-pair, 

 ventral aspect of capitulum with coxae, tarsus 4, anal groove and spiracle. (Nuttall, 

 1910, Fig. 2, F. M. H. del.) 



Larva (unfed, Fig. 193) : Body 08 mm. long, resembles the °. 

 and o in its chief characters (coxae, trochanters, tarsi). Scutum more 

 rounded (0*4 x 04 mm.) than in the o, with deep cervical grooves. 

 Capitulum : hypostome 2 j 2, with six teeth in the external files. 



v% 



<5 



Fig. 193. I. caledonicus larva: capitulum and scutum, ventral aspect of capitulum with 

 coxae, tarsus 3, anal groove. (Nuttall, 1910, Fig. 3, F. M. H. del.) 



Described from 1 !j! (N. 961) found on rocks below a dove's nest, 

 Fastcastle, Scotland, 6. ix. 1909, by Messrs J. F. Cormack and 

 J. Waterston and communicated by Dr J. H. Ashworth (Edinburgh) ; 

 1 o and 3 larvae (N. 1142) found on young domestic pigeon, from a 

 dovecot at Dunipace, Stirlingshire, Scotland, 18. IV. 1910, and 1 $ 

 and 4 os (N. 1200) from the same source, 9. vm. 1910, communicated 

 by Mr William Evans (Edinburgh). 



