H. liumerosa 497 



grooves long and nearly straight, slightly diverging posteriorly ; lateral 

 grooves long and very near the border, including one festoon ; festoons 

 moderately long, the intervals curved. Capitalum 0*3 mm. long, base 

 rather long, with long sharp cornua proceeding from the dorsal surface. 

 Hypostome with very small teeth, 5 \ 5. Palps long, especially article 2, 

 which is about four times as long as article 3; its sharp external angle 

 being much posterior to its insertion; no dorsal spur; a very small 

 sharp spur under article 3. Venter : genital aperture between coxae II, 

 covered by an elongate shield ; spiracle large, broader posteriorly, 

 without definite dorsal process. Legs: coxae very broad (antero-pos- 

 teriorly) and progressively increasing in size, all more or less pointed 

 at the internal angle, the spur on coxa IV dark and conical ; coxa I 

 protrudes beyond the scapular angle and rises to the level of the dorsal 

 surface, giving a characteristic appearance (hence humerosa). 



Female (Fig. 437) : Of the same colour as the ,/. Scutum oval, 

 0"8 X 0"6 to I'O X 0'66' mm., cervical grooves only slightly concave and 

 attaining the posterior border. Capitulum 0'4 mm. long, like that of 

 the </, but with article 2 rather less salient, and only about thrice as 

 long as article 3 ; hypostome 5 | 5, very small teeth ; basis capituli 

 ridged laterally and anteriorly, the sub-circular porose areas are very 

 faintly indicated at the sides of the flat median area. Legs like those of 

 the (/" ; tarsus IV medium, rather thick, tapering. 



Nymph : Strongly resembles the $ , having the same elongated 

 body and the same type of capitulum, which is, however, shorter in com- 

 parison to its breadth. The scutum about as long as broad, 0'4 x 04 mm.^; 

 punctations few and scattered ; cervical grooves are deep broad furrows 

 not quite attaining the posterior border. Legs as in the $ but with 

 shorter sharply pointed tarsi IV. 



Described from (N. 669) 3 (/ 1 ? and 1 o taken from Perameles 

 maxirura, Barrow Island, N.W. Australia, and presented by the Hon. 

 N. C. Rothschild. The measurements appended in the footnotes relate to 

 specimens brought from Australia by Mr L. Harrison : 2 </ 3 $ 5 o 

 from Perameles macrur'a, Stapleton, Northern Territorj', 31. xi. 1913, 



' The scutums of 5 ? gave the following measurements in mm. : 



1-0 xO-GG 0-95 X 0-66 



0-97 X 0-7 0-9 xO-6 



0-97 X 0-65 

 The scutums of 5 nymphs gave the following measurements in mm. : 

 0-4 X 0-4 (3 specimens) 0-38 x 0-39 



0-4 X 0-36 



