L. E. Robinson 
479 
capituli rectangular, about three times as broad as long; cornua short, 
with rounded extremities; porose areas well separated, the interval as 
great as or exceeding the double diameter. Palps hemicylindro-conical, 
with no prominent lateral protrusion; articles 2 and 3 with postero- 
ventral, -lateral and -dorsal margins slightly salient; article 3 with a 
retrograde process on the ventral surface only. Hypostome dentition 
4 j 4. Venter scattered with pale hairs ; genital orifice opposite inter¬ 
space between coxae II and III; genital grooves widely separated and 
Fig. 1. Haemaphysalts silacea ? : (a) dorsum (capitulum foreshortened); (b) capitulum, 
dorsal aspect; (c) capitulum, ventral aspect; (d) spiracle (the arrows indicate the 
anterior and lateral margins, respectively); (e) coxae I-IV; (/) tarsi I and IV. 
/—same magnification as b and c, d —same magnification as e. (C. 370. L.E.K. del.) 
