CROTALIDH. 
TWENTIETH GENUS—CROTALIDZ (Pit Vipers). 
It is made up of the following species, viz.: 
( 
1 
F 
3 
| 4 
| 5 
oe 
Crotalide. + 
(11 species 
and 39 va- 
rieties. ) | 7 
8 
9. 
10 
11 
L 
Crotaphopheltusrufescens, 1 
. Crotalophorus miliaris, 
Total, . 
. Calloselasma rhodostoma, 1 
1 
Varieties. 
. Trimeresurus, .9 | 
. Peltopelor, er Hie: 
. Halys, . 2 | 
. Hypnale, . pelt 
. Crotalus, . - . 8 United States. 
( 9 bé 
| 1 Mexico. 
. Candisona, aeseh fo, ewe Moxiep: 
1 Venezuela. 
| 1 Guiana and Brazil. 
- ee us s¢ Mexico. 
. Craspedocephalus, . . 8 2Brazil,1 Martinique. 
. Fasciatus, . 3. U.S. of Colombia. 
South Africa. 
Java and Siam. 
Asia (Kuhl). 
. 89 varieties. 
Of this genus the only species found in India that has the 
vestige of a caudal appendage is the Halys; and in this it is 
reduced to a simple horny spine or point. 
First Species—CROTALUS TRIMERESURUS, is made up of— 
4 
| No. 1. Crotalus Trimeresurus gramineus, — Giiinther. 
os erythrurus, 
* carinatus, e 
as anamallensis, i 
o monticola, " 
- strigatus, * 
* mucrosquamatus, ‘ 
$3 Andersonii, ee 
Crotalus Trimeresurus——Although the individuals of this 
species are fierce and venomous, yet few deaths are ascribed to 
