10. EHTTIDOCEROS. 



385 



(18e0) ; Oates, 8tr. F. x. p. 189 (1882) ; Nicholson, Ibis, 1883, 



p. 241. 

 Rhjtidoceros subruficollis, Cab. i§- Heine, Mas. Hein. ii. p. 172 (1860) ; 



Tiveeddale, Ibis, 1877, p. 295 ; Elliot, Mo7io(j. Bucerot. pi. 36 



[text] (1878) ; Sharpe, Ibis, 1879, p. 246 ; Oates, B. Brit. Bur- 



mah, ii. p. 91 (1883) ; Anderson, J. L. S. xxi. p. 147 (1887) ; 



Oates, ed. Hume's Nests ^- Eggs hid. B. iii. p. 81 (1890). 

 Buceros (Rliyticeros) subruficollis, Grai/, Hand-l. B. ii. p. 129 



sp. 7886 (1870). 

 Aceros subruficollis, Blyth, Cat. Mamm. S)- B, Burma, p. 09, sp. 72 



(1875) ; Oates, Str. F. vii. p. 46 (1878). 

 Buceros plicatus, Blyth {nee Forst.), J. As. Sac. Bang. xii. p. 991 



(1843) ; ibid. xvi. p. 998 (1847) ; Gray, Gen. B. ii. p. 399 [part.] 



(1847) ; Blyth, Cat. B. Mus. As. Soc.\. 45 (1849). 

 Buceros (Rhytidoceros) plicatus, var. subruficollis, Dubois, Bull, 



Mus. Belg. iii. p. 206 (1885). 

 Buceros (Rhyticeros) pusarau, Tickell, Ibis, 1864, p. 180 [part.]. 



Adult male. Resembles the male adult of R. undidains iu every 

 particular except that the base of the bill is smooth, and never has 

 any transverse plaits developed ; the gular skin has no transverse 

 black band, and the general size is smaller : iris lake : bill greenish 

 white ; eyelids greenish ; skin on throat bright lemon-yellow ; legs 

 black. Total length 37'5 inches, wing 17'5, tail 10-4, tarsus 2-1. 



Adult female. Exactly similar to the female adult of R. undii- 

 hitus, but the base of the bill smooth instead of being covered with 

 transverse plaits, and the size smaller : skin on throat turquoise- 

 blue. Total length 80 inches, wing 14-2, tail 8"2, tarsus 2. 



An adult male from Labuan has the bad- of the neck white like 

 the front. 



Hab. Arrakan, Pegu, Teuasserim, Southern Slian States of Siam, 

 Sumatra, Borneo. 



«-^- d $ ad. et 



imm. sk. 

 i. cJ ad. sk, 



k. $ ad. sk. 



/, m. (S 2 ad. sk. 



n. cJ ad. sk. 

 0} Pi ?• c? 2 ad. 



sk. 

 r. (S ad. sk. 



s. c? ad. sk. 



t. $ ad. sk. 



u, V, w. (5 2 ad. 



sk. 

 .1'. 2 ad. sk. 

 y. 2 ad. sk. 



z. (S imm. sk. 

 VOL, xvn. 



Tough 00, Feb., Mav, June, Dee. 



{E.G. W.R.).'^ 

 Pegu, April. 



Lower Pegu, Feb. 



Amherst, March ( W. Davi- 

 son). 

 S, of Yea, April ( W. Davison). 

 Karope, March (TF. Davison). 



Meetamyo, Tavoy, April ( If. 



Davison). 

 Tenasserim, Feb. (IF. Lim- 



borg). 

 Teuasserim, Feb. 

 Teuasserim [Heifer). 



Baukasoon, Dec. ( W. Davison). 

 Rawas R., Sumatra, Nov. {H. 



O. Forbes). 

 Baram, Sarawak. 



Tweeddale Coll. 



E. W. Oates, Esq. 

 [C.]. 



E. W. Oates, Esq. 

 [C.]. 



Hume Coll. 



Hume Coll. 

 Hume Coll. 



Hume Coll. 



Tweeddale Coll. 



C. T. Bingham [C.]. 

 India Museum. 

 (Typical specimens.) 

 Hume Coll. 



F. Nicholson, Esq. 

 [R]. 



C. Hose, Esq. TO.]. 

 2c 



