I. holocyclus 



237 



outside : article 4 very small, subterminal. Legs reddish yellow, long. 

 Coxae large, trapezoid, separated by intervals almost equal to their 

 width, a postero-external spur decreasing in size from coxae I to IV; 

 long white hairs on the posterior coxal border. Similar hairs on the 

 ventral border of the other articles. Tarsus 1 as in /. ornithorhynchi (see 

 Fig. 237) ; tarsus 4 almost four times as long as broad, abruptly tapering, 

 the pseudo-articulation nearer the proximal extremity of the article ; 

 claws short, the pad almost reaching their tips. 



Fig. 231. /. holocyclus ? (partially gorged): 1, capitulum and scutum in dorsal aspect; 

 2, venter ; 3, hypostome, x 75. (Neumann, 1899, Fig. 25.) 



Nymph (Fig. 232) : differs from % as follows : Body oval, 2-6 x 

 ] 3 mm. (broadest on a line with the spiracles). Scutum 1 x 07 mm. 

 Capitulum 0'88 mm. long (dorsally); base more conical. (Digit, see 

 footnote 1 .) Hypostome narrower, sharper, with 2 j 2 files of 13-14 teeth, 

 the external stout, pointed, the internal blunt. Palps without apparent 

 articulation separating articles 2 and 3. Legs 4 extending beyond 

 the posterior border of the body to at least the length of the tarsi ; 

 coxal spurs feebler. 



Description based on 2 $ s and 1 £ collected from Australian sheep ; 

 1 °. from Phascogale penicillata (Marsupial Tree-shrew) at Port 

 Stephens, Australia; 1 O from Sciurus variabilis in India (British 

 Museum) ; 1 gorged $ from a dog in Queensland (Bur. Animal 

 Industry, Wash.); 2 gorged $s of unknown origin (Hamburg Museum); 

 1 unfed ? from N. S. Wales, and 1 o from E. India (?) (Berlin 

 Museum) ; 1 microscopic specimen of a O from a red squirrel from 



1 Digit 115 n long ; dorsal process a subterminal hook at the end of a narrow shaft. 



