The intrinsic muscles of the syrinx fixed to the ends of the bronchial semi-rings; the edges of the mandible smooth or the upper one simply notched; hinder aspect of tarsus longitudially bilaminated, the laminae entirely smooth ; wing with ten primaries; tongue non-tubular; nostrils always clear of the line of forehead, the space between the nostrils and the edge of the mandible less than the distance between the nostril and the culmen; plumage of the nestling streaked; rictal bristles present; sexes alike; rectrices twelve; first primary small; one moult in the year.
The family Eulabetidae, so far as India is concerned, contains only two genera, Eulabes and Calornis. These genera are usually placed among the Sturnidae, but there are such important dif¬ferences between the two families, that I deem it necessary to separate them.
The Eulabetidae are strictly arboreal, have rictal bristles, and lay spotted eggs. The Sturnidae, on the other hand, procure a great portion of their food on the ground, have no trace of rictal bristles, and lay spotless eggs.
In Calornis the young bird is very greatly streaked, but in Eulabes the plumage of the young, so far as specimens of the young at my disposal have enabled me to determine the point, are plain. But I have seen no really young nestling. Probably Eulabes should not be associated with Calornis, but rather with the subfamily Sibiinae of the Crateropodidae.
Key to the Genera.
a. Fleshy wattles on the head………………EULABES, p. 509.
b. No wattles on the head………………CALORNIS, p. 514.