196 Journal of the F.M.S. Museums. [Vov. VIII, 
Very common among low bushes and dense undergrowth 
from 3,000-5,000 feet, but rare above this limit. Evidently 
local in its distribution, as the only collectors who have 
obtained it of late years are Beccari and Forbes, who each 
secured a single specimen. 
Thringorhina guttata (Blyth), of which the F.M.S. 
Museums possesses specimens from the north of the Malay 
Peninsula, is closely allied to this species, of which it can only 
be regarded as the mainland representative; it differs only in 
having the upper surface of a much lighter brown and in 
having the white centres to the feathers of the sides of the 
head and neck more extensive; the ear coverts also are dark 
fuscous brown, not greyish black as in the Sumatran bird; 
there appears to be no difference in size. 
_ The genus, founded on the peculiar bill with an extra- 
ordinarily large operculum to the nostrils and the distinctive 
type of colouration, appears to be well characterised. 
Macronus ptilosus, Jard. & Selby. 
Macronus ptilosus, Jard. & Selby; Salvad. Ann. Mus. Civ. 
Gen. xix, pt 224 (1879)] Sharpe, Cat. Birds Brit: Mus. vat; 
p. 583 (1883) ; Vorderman, Nat. Tijd. Nederl. Ind. xlix, p. 404, 
no. 294 (1889); Parrot, Abh. Konigl. Akad. Bayer. 11, xxiv, 
Bd. 1, p. 248 (19); Robinson, Journ. Fed. Malay States Mus. 
ii, Py 203)5(1900)) Stonewmiarocw Acad.) Nat- Sci eianladmsluve 
p. 685 (1902). 
a,b. 26. Pasir Ganting, West Sumatran Coast, 
ati 2° SS. oil |fwine, UoOpe, (INOS, 2,027, 
2,028. | 
“Tris chestnut, orbital and gular skin cobalt, turquoise 
over eye, bill black, feet slate.” 
Of exactly the same habits and distribution as Stachyris 
nigricollis, but perhaps rather less arboreal in its habits than 
that species. 
124. Mixornis ruficapilla subsp. sumatrana (Bp.). 
Motacilla gularis, Raffles, Trans. Linn. Soc. xii, p. 312 
(1822). 
Timalia gularis, Horsf. Zool. Res. in 1 Java (1824) descrip- 
tion and figure. 
Mixornis sumatrana, Bp. Consp. Av. 1, p. 217 (1850). 
Mixorms gulavis (Raffles); Salvad. Ann. Mus. Civ. Gen. 
X1V, p. 223 (1879) ; Sharpe, ‘Cat. Birds Brit. Mus: vii, pas576 
(1883); Buttikofer, Notes Leyden Mus. vii, p. 68 (1887); 
Vorderman, Nat. Tijd. Nederl. Ind. xlix, p. 404, no. 292 (1889); 
Hartert, Nov. Zool. ix, p. 213 (1902) ; Stone, Proc. Acad. Nat. 
Sci. Philad. liv, p. 685 (1902). 
a, b. 2 ¢. Sandaran Agong, Korinchi Valley, 
Sumatra, 2,450 feet. 24th May-1st June, 
1914. [Nos. 1639, 1827.] 
Expedition to Korinchi: 
