Sharpe, Bull. B. O. C., xii, p. 55 (1902). Type, II. cruralis.
Gould's name Drymochares being preoccupied as a name for a genus of Coleoptera, Sharpe's name Heteroxenicus (' Hand-List of Birds,' iv, p. 56, 1903) must be used.
The genus Heteroxenicus differs from Brachypteryx principally in having longer tarsi and a still shorter tail, in other respects it is very close to that genus. The bill is much as in that bird, rather more slender, with long oval nostrils and moderate rictal bristles. The wing is short and rounded; the tail very short and the tarsi very long and slender.
The young are not, as stated by Oates, like the female, but are squamated and spotted as in all the Turdidae.
Key to Species.
A. Upper plumage chestnut H. stellatus, p. 16,
B. Upper plumage blue.
a. Chin and throat chestnut H. hyperythrus, ,p. 17.
b. Chin and throat indigo-blue H. nipalensis, p. 19.
c. Chin and throat white.
a1 Abdomen barred with ashy H. cruralis, , p. 18.
b1. Abdomen without any bars H. sinensis, p. 20.
C Upper plumage brown.
d. Chin and throat chestnut H. hyperythrus, ;P.17.
e. Chin and throat ashy-brown H. cruralis, , p. 18.
f. Chin and throat dull white H. nipalensis, , p. 19.
g. Chin and throat fulvous H. sinensis, P.20.