The genus for which I propose the name of Sittiparus (with S. cinereus as the type) contains two birds which are quite different from Schoeniparus on the one hand, and from Proparus and Lioparus on the other.
In 1844 (J. A. S. B. xiii, p. 939) Hodgson proposed the name of Certhiparus for S. castaneiceps. This name had, however, been given by Lafresnaye two years previously to some birds from New Zealand, and Hodgson's name cannot therefore be retained.
Sittiparus is one of the genera of Timeliine birds with a Tit-like bill. It differs from Schoeniparus in having the tail very much shorter than the wing, and from Proparus and Lioparus in having no hairs overhanging the nostrils.
Key to the Species.
a. Head grey; a long black supercilium……………S. cinereus, p. 171.
b. Head chestnut; no black supercilium……………S. castaneiceps, p. 172.