86 On an apparently new Species of Hornbill. 
does not reach to the maxilla. Naked skin around the eye 
and on sides of the throat flesh-colour. Head, neck, throat, 
upper part of breast, back, wing, and central tail-feathers 
black, with dark green reflections. Entire underparts, thighs, 
and tips of the secondaries and primaries pure white. Lateral 
tail-feathers have their apical third pure white, rest black, 
with green reflections. Tarsi and feet black. ‘Total length 
from base of maxilla to end of central rectrices 234 inches ; 
wing 103 inches; tail 11} inches; bill along gape 53 inches; 
casque on top 4% inches, height at base of maxilla 13 inch; 
height of bill and casque at base 23 inches ; tarsus 13 inch. 
Hab. Cochin China. 
The present bird bears the same relationship to A. mala- 
baricus as A. convexus does to A. coronatus, and appa- 
rently represents the A. malabaricus in Cochin China. It is 
much smaller than A. malabaricus in all its dimensions, has the 
casque much more compressed at the ends; and the black 
mark on the anterior portion does not reach the maxilla, but is 
confined to the casque as is seen in A. coronatus ; whereas in A. 
convexus and malabaricus the black mark always extends on- 
to the maxilla. The lateral rectrices; however, being only 
white for their apical third, indicates that the relationship of 
this species is with A. malabaricus and not with the others 
named. In order that the difference in size between the two 
species may be more clearly perceived, I add the measure- 
ments of A. fraterculus, as given above, and those of a fine 
adult male specimen, in the Paris Museum, of A. malabaricus 
for comparison :— 
Anthracoceros fraterculus. Anthracoceros malabaricus. 
From base of maxilla to end of From base of maxilla to end of 
rectrices 233 inches. rectrices 26 inches. 
Wing 103. Wing 13. 
Tail 11}. Tail 13. 
Bill along gape 54. Bill along gape 6}. 
Casque on top 4%. Casque on top 74. 
Height of casque at base of max- Height of casque at base of max- 
illa 14. illa 2. 
Height of bill and casque at base Height of bill and casque at base 
23. 33. 
Tarsus 14. Tarsus 2. 
The type was brought from Cochin China, and is now in 
the Paris Museum ; and for the opportunity of describing it I 
am indebted to Prof. A. Milne-Edwards, who in the most 
liberal manner does every thing in his power to facilitate in- 
vestigations in the magnificent collections under his charge. 
It would appear, therefore, that there are four species of 
Hornbills belonging to the genus Anthracoceros, differing from 
