/. schillingsi 



241 



indication of a spur at the postero-external angle. A very slight tooth, 

 ventrally, at the distal extremity of the trochanters of each leg. Tarsi 

 long, especially those of pairs 1 and 4, tapering fairly abruptly near to 

 their extremities ; pad almost as long as the claws. 



Nymph (Fig. 235) : resembles the $ but the scutum is broader ; 

 the punctations on the scutum, though deep, are not so numerous, 

 and there is a slight external spur on all the coxae. 



Fig. 235. I. schillingsi o : capitulum and scutum, ventral aspect of (mutilated) capitulum 

 with coxae, anal groove, spiracle and tarsus 4. Specimen from the same source as 

 preceding. (Original, G. H. F. N. del.) 



Our description of the $ and o is based on (N. 1171) 1 % and 2 os 

 presented by the Berlin Museum from among Neumann's types (12 %s, 

 etc.) from Colobus caudatus, a monkey, from German East Africa 

 (Schillings coll.). According to Schillings, as stated by Neumann, this 

 tick fixes itself exclusively on the eyes, especially in young monkeys, 

 one eye being often lost. Neumann, 1907 a, p. 18, reports 2 $s and 

 1 o, found on Colobus caudatus, Kilimandjaro, Kibonoto, 8. vn. 1905, 

 and 1 ^ found in the same locality on grass, 12. vn. 1905, collected 

 by the Sjiistedt Zoological Expedition, German East Africa. Neumann 

 (1910, p. 171) has recently described the £ from a specimen found in 

 copula, collected by G. Vasse in 1907, in Mozambique, Province of 

 Gorongoza (Paris Mus.) ; the description we give of the <$ is condensed 

 from Neumann, who states that the 2 % s collected with the £ were 

 somewhat larger than the types (7 mm. I., including capitulum). 



