Oates applied the generic term Ianthocincla to those Laughing-Thrushes which have no bristles at the base of the forehead, but in which the nostrils are overhung by a few long hairs. The genus differs in no other respect from Garrulax, and the division is perhaps hardly necessary, but it is convenient for students and may therefore be retained. All the species are remarkable for having the secondaries tipped with white and the bill is rather narrow.
Key to Species and Subspecies.
A. Crown and nape black.
a. Upper plumage spotted with white,... I. ocellata ocellata, p. 155.
b. Upper plumage barred with black. [p. 158.
a1. Ear-coverts black I. rufogularis rufogularis,
b1. Ear-coverts rusty-orange I r. occidentalis, p. 159.
c1 Ear-coverts brown I. r. assamensis, p. 159.
c. Upper plumage neither barred nor [p. 156.
spotted I. cineracea cineracea,
B. Crown and nape ashy I.e. styani, p. 157.
C Crown and nape reddish brown with pale
d. Lower plumage rufous-brown with white
bars I. austeni austeni, p. 160.
e. Lower plumage much paler, each feather
with broad white edges I. a. victoria), p. 161