1918. ] H. C. Ropinson & C. B. Ktoss: Birds. 141 
Chotorhea chrysopogon subsp. laetus nov. 
In size and other respects similar to C. chrysopogon chry- 
sopogon, from Sumatra, but having the yellow malar patch 
somewhat more extensive and bright golden yellow, almost 
orange in colour (“primuline yellow” Pl. xvi, Ridgeway, 
Color Standards and Nomenclature, Washington, 1912), 
against ‘‘Strontian yellow” in the Sumatran form. Red of 
occiput a little more extensive and the blue correspondingly 
reduced in area. 
Type :—F. M. S. Mus. No. 1893/10, from Bukit Tangga, 
Negri Sembilan, Federated Malay States. 
56. Cyanops oorti (S. Muell.). 
Cyanops oorti (S. Muell.); Salvad. Ann. Mus. Civ. Gen. 
Kivs) p: 180 (1879)5- id. op. cit. (ser: Zaleal, ps 44 (1891) ; 
Seley, op. icit, p- 70; Vorderm. op: elt p.1569,, no. 41; 
Robinson, Journ. Fed. Malay States Mus. 11, p. 179 (1909). 
a. &. Sungei Penoh, Korinchi Vailey, Sumatra, 
2,650 feet. roth March. [No. 30.] 
Coc oye kes iimim., I immemestolak Daras, 
Korinchi Valley, Sumatra, 3,000 feet. 14th- 
27th March. (Nos. 103; ngie2, e166, 172, 
IQI-3, 246-7, 259, 288, 304, 376, 429, 434, 
462, 475.] 
sy. 26,3 %,1%imm. Sandaran Agong, Korinchi 
Valley, Sumatra, 2,450 feet. 25th May-rst 
June. [Nos. 1663, 1778, 1796-7, 1823-4. ] 
Adult: “Iris chestnut or chocolate, orbital skin dirty 
green; bill black, pale at base; feet plumbeous green. 
Immature: iris light hazel; bill blackish horn, blotched with 
yellowish ; feet greenish lead.” 
Very abundant indeed on the lower slopes of the main 
Korinchi Valley but quite absent from the higher ranges and 
from the slopes of Korinchi Peak itself. 
Comparison of a considerable number of skins en the 
Malay Peninsula with the large series indicated above reveals 
no constant differences of any importance; the bills of the 
Malay Peninsula specimens are perhaps a trifle smaller but 
the difference is hardly tangible. 
Mesobucco duvauceli (Less.). 
Mesobucco duvauceli (Less.); Shelley, op. cit. p. 85; 
Robinson, Journ. Fed. Malay States Mus. il, p. 179 (1909). 
Xantholaema duvaucelii, Buttik. op. cit. p. 16; Vorderman, 
op. cit. p. 389, no. 44. 
i» 296 sad, 29d imm., ¢% imme veasi,r Ganting, 
Coast of West Sumatra, Lat. 2° S. June 
18th-22nd. [Nos. 1992, 2040-2, 2084. ] 
Part IL: Vertebrata, - 
