206. AOLLYPTOPRIB. 269 | 
Poison-fangs followed by 5 small teeth, the anterior of which 
are grooved. Snout short; nostrils superior, between two nasals 
and an internasal, a pair of elongate internasals separating the 
nasals ; frontal and parietal shields large; preocular present; no 
loreal. Body rather elongate; scales hexagonal, juxtaposed; no 
distinct ventrals. 
Coast of Java. 
1. Thalassophis anomalus. 
Thalassophis anomalus, Schmidt, Abh. Naturw. Hamb. ii. 1852, 
p- 81, pl. iv. 
ydropes anomala, Fischer, Abh. Naturw. Hamb. iii. 1856, p. 58 ; 
Giinth. Rept. Brit. Ind. p. 879 (1864) ; Jan, Icon. Gén. 40, pl. iv. 
fig. 1 (1872), 
Rostral broken up into several small shields ; internasals narrow, 
elongate, longer than the preefrontals, as long as the frontal; latter 
shorter than its distance from the end of the snout; one pra- and 
two postoculars ; temporals small, scale-like; seven or eight upper 
labials, second largest and in contact with the prefrontal, third 
entering the eye, fourth and fifth separated from the eye by sub- 
oculars; two pairs of small chin-shields, the posterior separated 
from each other by two scales. Scales with a strong tubercular 
keel, which is double on the median ventral row, 31 to 33 round 
the body. Body with dark annuli, wider on the back. 
Total length 810 millim. ; tail 84. 
Java. 
206. ACALYPTOPHIS. 
Acalyptus (non Schénh.), Dum. §& Bibr. Mém. Ac. Se. xxiii. 18538, 
p. 522, and Erp. Gén, vii. p. 1839 (1854) ; Fischer, Abh. Naturw. 
Hamb. iii. 1856, p. 387; Jan, Elenco sist. Ofid. p. 108 (1863); 
Giinth. Rept. Brit. Ind. p. 859 (1864). 
Maxillary longer than the ectopterygoid, not extending forwards 
as far as the palatine; poison-fangs moderate, followed, after a 
short interspace, by 8 or 9 solid teeth. Snout short; nostrils 
superior, between two nasals and the prefrontal ; the larger nasals 
in contact with each other; frontal and parietal shields broken up 
into scales; preeocular present; no loreal, Body rather elongate ; 
scales subimbricate ; no distinct ventrals. 
Western Tropical Pacific Ocean. 
1. Acalyptophis peronii. 
Acalyptus peronii, Dum. § Bibr. Mém. Ac. Sc. xxiii. 1853, p. 522. 
superciliosus, Dum. & Bibr. vii. p. 1840 (1854); Giinth. 
bes Brit. Ind. p. 359 (1864) ; Jan, Icon. Gién, 40, pl. ii. fig. 2 
). 
Head rather small. Diameter of neck one third to two fifths 
the greatest depth of the body. Kye a little longer than its 
