300 
The Genus Ixodes 
with a slight slope near the tips, the distal pseudo-article of tarsus 4 
thrice as long as the basal; pads nearly as long as the claws. 
Described from a single $ found on a dog, at the Veterinary Patho¬ 
logical Laboratory, Nairobi, British East Africa, 12. m. 1912, by 
Mr H. Bran white and received from the Imperial Bureau of Entomology, 
London (No. 507) to whom the type belongs. 
The species is allied to I. lunatus Neumann 1907, from Madagascar 
(see Ticks, Part n. pp. 226-227, figs. 222-223 $), but differs chiefly in 
having coxa I not bifid, coxae II—III unarmed, scutum longer and with 
distinct lateral ridges, basis capituli shorter and porose areas large. 
Ixodes riciiras var. gibbosus n. var. 
Fig. 5. 
Resembles typical I. ricinus in all particulars but the following: 
All the tarsi are hummed distally in both sexes', the <? scutum is larger 
and the $ scutum is somewhat smaller than in the type. 
Fig. 5. Ixodes ricinus var. gibbosus n. var. (N. 2553) $ and $ tarsi of the fourth leg 
(G.H.FN. del.). 
The scutums of 4 and 3 ? measure as follows in mm.: 
<J 
2-03 x 1-0 
2-05 x 1-08 
2-10 x 1-07 
2-10 x 1-07 
$ 
1-17 x 1-23 
1-18 x M3 
1-26 x 1-18 
Described from (N. 2553) 5 A 6 ? found by Mr W. H. J. van Heemstra 
on Capra hircus, Smyrna, Asiatic Turkey, xi. 1913, in company with 
Hyalomma aegyptium and Haemaphysalis cinnabarina var. punctata. 
Types in Cambridge. 
