134 VENOMS 
(4) Hydrelaps. 
Snout short; 6 teeth behind the poison-fangs; nostril in a 
single nasal shield; head-shields large. 
Body feebly compressed ; 
scales imbricate ; ventral scales small, but well developed. 
Fic. 79.-— Hydrophis coronatus. 
(After Sir Joseph Fayrer:) 
H. darwiniensis.— 
Body with yellowish- 
white and blackish 
annuh, the black rings 
narrower on the belly; 
head dark olive spotted 
with black. 
Total length, 435 
millimetres; tail 43. 
Habitat: North 
Australia. 
(5) Hydrophis. 
(Fic. 79.) 
Poison-fangs large, 
followed by a series of 
7—18 solid teeth. Head 
small; nostrils on the 
upper surface of the 
snout, pierced in a 
single nasal shield; 
head - shields large ; 
preocular present. 
Body long, often very 
slender anteriorly ; 
scales on the anterior 
part of the body imbricate, rectangular, keeled or tubercular ; 
ventrals more or less distinct, very small. 
A considerable number of (at least 
) species of HyDROPHIS 
are known. Those most frequently met with are the following :— 
