Anthreptes Swainson, Class. B. ii, p.:329 (1837). Type, Anthreptes malacensis Scop.
This name antedates that of Anthothreptes Cabanis, 1850.
The genus Anthreptes differs from Arachnechthra in having a deeper and much straighter bill, the lower mandible being straight or almost so. The sexes differ in colour.
A. hypogrammica is rather different from any other species of this genus in its peculiar striped under plumage and should perhaps, be removed to the genus Hypogramma (Reich. Handb.. Scans, p. 314, 1850) created for this bird.
Key to Species.
A. Lower plumage streaked; males with no pectoral tuft………..A. hypogrammica, p. 408.
B. Lower plumage plain; males with bright pectoral tufts.
a. Whole upper plumage metallic.
a1. Sides of head greenish-yellow………..A. malacensis, p. 409.
a1. Sides of head rufous………..A. rhodolaema, p. 411.
b. Metallic plumage, if any, confined to head.
c1 Forehead and crown metallic green ………..A. simplex, p. 411.
d1. Forehead and crown like the back.
a2 . Bill over 15 mm………..A. malacensis, , p. 409. & A. rhodolaema, , p. 411.
b2. Bill under 15 mm………..A. simplex, , p. 411.