686 
Subalbiiui 
Atratus, 
Porphyri- 
ar.us. 
Unicohr. 
Aidicus. 
Monilis, 
JJydrus. 
AMPHIBIA. SERPENTS. 8. Coluber. 
occalionally on land ; refembles C. natrix, and is o 
long ; black ; abdominal plates black, every other p 
colour at one end or the other. , , 
Teeth exferted, needle-like; in a double comb on 
irids brown ; tail very obfcurely triangular ; 
other one white. 
Plates of the belly 165 ; fcales of the tail 75. , . 
Inhabits America. Whitifh, with 30 brown ban > 
rounded, obtufe. 
plates of the belly 163 ; fcales of the tail 77. 
Body with a black band. 
Plates of the belly 188, of the anus 7 ; fcales of 
Violet-black; belly and ftdes crimfon; plates edged"'* 
fcales lead-colour. 
Plates of the belly 176 ; fcales of the tail 66. 
^ock uniform ; fides lineate as far as the vent ; fnout »>* 
Plates of the belly 184 ; fcales of the tail 60. 
Inhabits America. Grey, with numerous linear wb* 
which are forked at the (ides; hind-head each **<* 
triangular white fpot, which nearly meet on the nap*' 
Plates of the belly 164 ; fcales of the tail 82. 
Inhabits America ; annulate ; back with 3 white dot* 
together like beads. 
Plates of the belly 180 ; fcales of the tail 66. ' 
Inhabits the Ca/pian Jea ; never goes on land ; nesrl) ^ 
fpi’’*’ \\ 
Head fmall, cheeks not inflated ; palate with a doubl* 
fine fharp reclined teeth; toneue very lone, black; if] 
•• - - /tolive-alh with round 
with a yellow circle ; back 
difpofeci by fives in 4 rows ; neck with a band 
forming an angle on the hind-head, with a ohlo*’8 
fpots between ; belly teffellate with yellowifli and 
tail almoft entirely blackifh, with a double minute 
fpot, one over the other, at the end. 
