C. Warburton 
]:] 
lateral grooves fairly well-marked for two-thirds the length ; cervical 
grooves fairly deep and only slightly convergent. Dorsum with numerous 
very large punctations. Spiracle short comma-shaped, rather sharply 
recurved. 
Fig. 7. R. longiceps n. sp. ? . Capitulum, scutum and spiracle. Original, C. W. 
Described from 18 d^s and 3 $s (No. 351) from “ Klipspringer Bok ” 
taken by Dr F. C. Wellman in 1907 in the Benguella Hinterland, 
Angola, long. E. 15° 05' lat. 12° 44', altitude 1360 metres, and 19 ^Ts 
and 2 Js (No. 393) in a mixed collection of ticks taken by the same 
collector in the same district during 1908 but with no host recorded. 
Types in Cambridge. 
R. sculptus n. sp. 
Figs. 8, 9. 
Male. Very large, a well-developed specimen measuring 4 mm. 
Salient features: Inornate; Basis capitidi not much broader than 
long. Lateral angles antei'ior. Coxae somewhat prominent. Lateral 
grooves, dorsal furrows, anal plates and spiracles much as in R. 
supertritus. Sculpture of scutum very characteristic, glossy raised 
ridges defining a very distinct pseudo-scutum and outlining the dorsal 
furroius; the rest of the surface consisting of extremely rough shagreened 
tracts from which arise raised areas which are deeply pimctate. 
Detailed description:— 
In most respects much like R. supertritus Neumann, 1907, but: 
Average size somewhat larger. Basis capitidi rather broader in com¬ 
parison. Coxa I less prominent anteriorly, the projection curving sharply 
