242 
Birds of Celebes: Bucerotidae. 
most noarly allied to CTanovvhinus is unquestionably Rhjftidocevos , the membeis 
of which correspond with Cvanorrhinus cassidioc very closely in general coloration, 
much better than do Cvctnovvhtnus covTugatus and wold&ni ; indeed the latter are 
as much entitled to generic distinction from C. cctssidiw as are the species of 
Tthytidoceros. Bhytidoceros occurs both west and east of Celebes, the four species 
having the following distribution: R. undidatus from Cachar and Pegu down 
the Malay Peninsula to Sumatra, Borneo and Java; R. suhntjicollis with much 
the same distribution but not known in Java; R. narcondami from the small 
island of Narcondam in the Bay of Bengal about 170 miles due S. from Cape 
Negrais; and R. pKcatus (with its subspecies ruficollis) ranging from the Moluccas 
over New Guinea to the Solomon Islands (Grant, Cat. B. XVII, 1892, 382 sq.). 
It is instructive to see how the conclusions deduced from the geographical 
distribution of the members of one family may be partly undone, partly con- 
firmed, on considering that of another family. The Bucerotidae, like the Phoeni- 
cophaeinae, consist of many narrowly located genera; were the generic distinc- 
tions as finely drawn as in the Phoenicophaeinae several more generic names 
would have to be bestowed. 
Map VII. Distribution of the Hornbills of the East Indies. 
a> 
O 
'o “ 
Eh h 
03 <D 
fcX) 
?.s 
Indo-Chma 
Tenasserim 
1 Malacca 
Sumatra 
Borneo 
Java 
Philippines 
Celebes 
Moluccas 
1. Buceros 
2 
t 
A 
f 
A 
t 
t 
rhinoceros . . . 
. 
* 
* 
* 
sylvestris . . . 
* 
2. Dichocei'os .... 
1 
t 
t 
t 
t 
3. Hydrocorax .... 
3 
. 
t 
1 
4. Anthracoceros . . . 
5 
r 
►t, 
t 
t 
t 
A 
f 
t 
Sooloo 
' 
convexus .... 
. 
' 
* 
* 
* 
* 
malaya/niis . . . 
■ 
* 
* 
* 
montani .... 
Sooloo 
5. Otjmnolaemus . . . 
1 
‘ 
• 
Palawan 
t). Penelopides .... 
6 
t 
7. Bhahdotorrhinus . . 
1 
• 
t 
8. Cranorrhimis . . . 
4 
A 
f 
t 
t 
A 
t 
cassidix .... 
* 
leucocephalus . . 
’ 
* 
coir uga Ills . . . 
* 
* 
* 
u aldeni .... 
. 
* 
9. Bhytidoceros .... 
4 
t 
t 
t 
t 
A 
t 
t 
T 
undulatus . . . 
* 
* 
* 
* 
* 
* 
suhruficollis 
* 
* 
[*] 
* 
* 
plicatus .... 
1 
• 
* 
10. Anorrhinus .... 
1 
• 
t 
T 
T 
1 1 . Bereiiicornis .... 
1 
t 
t 
A 
f 
A 
f 
1 
12. Bhinoplax .... 
i 1 
f 
A 
t 
1 t 
A 
f 
1 
