402 
Messrs Nuttall and Warburton, 
Rhipicephalus coriaceus n. sp. 
Figures 17 — 20. 
Male, L. 4/3, W. 2’9 mm. to L. 45, W. 30 mm. Body (Figs. 
17 A, B and G ) narrow in front, impressed at the level of the eyes. 
Scutum covers the whole dorsum, red brown on the scapulae, very 
dark brown elsewhere, very coriaceus (whence the name) with 
rugosities rather than punctations ; cervical grooves convergent 
behind, their outer limits undefined, merging into a broad, flat, dull, 
depressed area bounded by a ridge which continues the lateral 
groove anteriorly ; marginal groove well-marked to the first festoon, 
continued more faintly to the second festoon ; numerous white 
hairs especially outside the marginal grooves, and around the 
border of the pseudoscutum, the others forming longitudinal rows; 
posterior depressions somewhat linear ; eyes flat, pale. Venter 
yellow, hairy ; genital grooves nearly parallel ; adanal shields large, 
dark brown, hairy, the outer side convex, bluntly pointed behind ; 
the brown anus situate at about ^ of their length ; black brown 
chitinous patches on the festoons, largest on the penultimate ; 
spiracles long comma-shaped. Gapitulum (0'9 to 1/1 mm. 1.) with 
base long, broader in front, the external angles anterior and 
only slightly salient ; cornua moderately salient ; a transverse 
Fig. 17. A <? dorsum to show hairs on surface, B the same, to show surface 
texture, C the same, ventral aspect (anus slightly too posterior). 
row of long hairs continued on the antero-lateral borders ; palps 
short and compact, articles 2 and 3 with small sharp lateral 
angles, fringed with hairs; parallel retrograde processes on the 
ventral surface of articles 1 ; hypostome 3| 3. Legs red brown, 
hairy; coxa I prominent in front and with two long spurs, the 
