H. wellingtoni 



481 



very large (0*6 mm. I.), with characteristics of (^ (hypostome, Fig. 

 418) ; porose areas large, oval, far apart. Legs : paler than body, coxae 

 as in cf. 



Nymph (Fig. 419) : Scutum 0'45 x 0'44 mm., about as broad as 

 long, deeply emarginate, with distinct sub-parallel cervical grooves 

 fading away towards the narrow posterior border. Gapitulum : base 

 broad, cornua short, lateral salience of article 2 of palps slight ; hypo- 

 stome 2 j 2, with 6 teeth per file. Venter : spiracle transversely ovoid. 

 Legs : coxae recalling those of the adult, tarsus IV short and tapering ; 

 pad long. 



Larva (Fig. 420) : Scutuju 0-25 x 0'33 mm., broader than long, 

 slightly emarginate, scapulae broadly rounded ; cervical grooves sub- 

 parallel, poorly defined. Capitulum : base with concave posterior 

 margin, without cornua, lateral salience of article 2 of palps slight ; 

 hypostome as in the n3maph. Legs: coxa I as in the nymph, coxae 

 II and III with protruding flange ; tarsi as in the nymph. 



Fig. 420. H. wellingtoni larva. Capitulum in dorsal and ventral aspects, scutum, coxae, 

 tarsus III. (N. 1057 from Selangor.) Original, N. C. del. 



Our description is based on (N. 221) 2 (/, 11 ? and 2 o taken from 

 domestic fowl at Sarawak, Borneo, collected by Dr A. R. Wellington 

 I. 1907. We have since received the following consignments: (N. 294), 

 8 (/, 3 ?, 10 o (data as under N. 221), collected v. 1907. Sumatra: 

 (N. 495 c), 4 $, from Bos indicus or huhalis, collected in 1908 at 

 Palembang by Dr J. C. Koningsberger ; (Schliffner's coll., 4 6) a </ 

 found on a goose. 



Federated Malay States : (N. 1014), 1 $ , from domestic fowl, 

 Kuala Lumpur, 1910, and (N. 1057) 2 (/, 2 o, 25 larvae from domestic 

 fowl, Selangor, collected ill. 1910, by Dr A. T. Stanton. Siam : Dr 

 R. Stokoe has sent us (N. 2232), 6 (f, 1 ? and 3 o from domestic fowl ; 



