H. inerniis 369 



not have expected any question to arise as to which of them a newly 

 discovered form belonged. Yet a grave question does arise in the 

 present case, and though we judge the tick here described to be a 

 Raemaphy salts, its resemblances to an Aponomma are more than 

 superficial. It possesses one Haemaphy sails characteristic never found 

 in Aponomma — the blade-like dorsal retrograde spur on trochanter 



1. Moreover, it is found on a mammal, whereas Aponomma is 

 essentially parasitic on reptiles. The long palps need not trouble 

 us much, as we know of several species of Haemaphysalis almost 

 equally aberrant in this respect^ ; and, though the palps are long 

 and very Aponomma-Xiike when viewed dorsally, they do not recall that 

 genus when viewed in profile (see Fig. 313). The Apononwia-Wke 

 shape of the scutum, also, is of little importance, for there is a great 

 range of scutal design in Haemaphysalis. It must be admitted, 

 however, that not only the dentition (3 j 3) but the whole appearance 

 of the hypostome is more like that found in Aponomma than in 

 Haemaphysalis, and that coxa I, though not distinctly bifid, displays a 

 tendency in that direction. 



2. HAEMAPHYSALIS WARBURTONI Nuttall, 1912. 



Figs. 314, 315. 

 Lit. and Icon. : Nuttall, 1912, pp. 55-57, Figs. 5, 6 (reproduced). 



Male (Fig. 314) : Scutum 2*5 x 1*8 to 2*3 x 1-6 mm.-, narrow in 

 front, broadest on a line with the spiracles ; cervical grooves short, con- 

 vergent pits ; lateral grooves include two festoons and extend forwards 

 to I the body-length ; posteriorly a median groove and two lateral 

 depressions, two longitudinal grooves anterior to the latter extending 

 forward to ^ the length ; festoons short ; punctations few, incon- 

 spicuous. Capitulum : 0"4 to 0".5 mm. long, base sub-rectangular, with 

 concave dorsal ridge connecting stout, somewhat convergent cornua 



1 See H. warburtoni (Fig. 314), leporis-paliistris (Fig. 326), aculeata (Fig. 371), 

 welUngtonl (Fig. 417), huiiierosa (Fig. 436). 



2 Five (? gave the following measurements in mm. : 



Capitulum 

 Scutum (length, measured dorsally) 



2-5 X 1-8 0-5 



2-4 X 1-7 0-5 



2-4 X 1-7 0-5 



2-4 X 1-6 0-5 



2-3 X 1-6 0-4 



