18 
Mr. G. L. Bates— Field-Notes on the 
the culmen less ridged than old birds, which have a sharp 
ridge reminding one of the incipient ridge in a small Hornbill. 
Now, supposing that these signs of youth, seen in the bill, 
hold good in G. calvus as well, there are five birds in the 
large series of the British Museum, of the form without 
tufts, that are young. As an additional proof that they are 
young, they all have a few small scattered feathers on the 
top of the head. 
Here we have birds both old and young with tufts, and 
birds both old and young without tufts. 
710. Barbatula leucol^ema. [Omvek.] 
Sharpe, Ibis, 1907, p. 442; Reich. Y. A. ii. p. 147. 
These little Barbets have several times been caught in holes 
in dead stumps or limbs. No. 1883 was caught thus in a hole 
in a small stump, only a few feet from the ground. The 
stump was half decayed and full of termites. The cavity 
excavated by the bird was 100 mm. in greatest depth and 
55 mm. in greatest diameter, the largest part not being the 
bottom but a little over halfway down. The diameter of 
the round entrance-hole was 20 mm., just big enough to 
admit the fore-finger. In the bottom was a little bed of 
fine chips, on which lay two glossy white eggs, which were 
very thin-shelled and fragile and got broken. But one was 
measured before it got broken, and was 15 x 11*5 mm. in 
size. 
Other females of this species were brought by boys, who 
said that they caught them in their holes; but no other eggs 
came to hand; the eggs generally got broken before they 
reached me. In one case the boy reported finding three 
eggs. 
715. Barbatula subsulphurea. [Omvek.] 
Sharpe, Ibis, 1907, p. 441. 
A specimen (1985) was caught in its hole, which was in a 
small dead limb, 50 mm. in diameter. The hollow made by 
the bird ran downward about 70 or 80 mm., and was almost 
as large as the limb, leaving only a thin shell of wood 
around it. There was nothing in the hole but the bird, 
