206. ACALTPTOPHIS. 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 ; prseocular present ; no 

 loreal. Body rather elongate ; scales hexagonal, juxtaposed ; no 

 distinct ventrals. 



Coast of Java. 



1. ThalassopMs anomalus. 



Thalassophis anomalus, Schmidt, Abh. Naturw. Hamh. ii. 1852, 



p. 81, pi. iv. 

 Hydrophis anomala, Fischer, Abh. Naturw. Hamb. iii. 1866, p. 58 ; 



Giinth. JRept. Brit. Ind. p. 879 (1884) ; Jan, Icon. G6n. 40, pi. iv. 



fig. 1 (1872). 



Rostral broken up into several small shields ; internasals narrow, 

 elongate, longer than the praefrontals, as long as the frontal ; latter 

 shorter than its distance from the end of the snout ; one prse- and 

 two postoculars ; temporals small, scale-like ; seven or eight upper 

 labials, second largest and in contact with the prsefrontal, 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 miUim. ; tail 84. 



Java. 



206. ACALYPTOPHIS. 



Acalyptus {non Schimh.), Dum. 8f Bibr. MSm. Ac. Sc. xxiii. 1853, 

 p. 522, and Erp. G6h. vii. p. 1339 (1854) ; Fischer, Abh. Naturw. 

 Hamb. iii. 1856, p. 87 ; Jan, Flenco sist. Ofid. p. 108 (1863) ; 

 Qunth. Rept. Brit. Ind. p. 359 (1864). 



MaxUlary 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 prsefrontal ; the larger nasals 

 in contact with each other ; frontal and parietal shields broken up 

 into, scales ; praeocular present ; no loreal. Body rather elongate ; 

 scales subimbricate ; no distinct ventrals. 



Western Tropical Pacific Ocean. 



1. Acalyptophis peronii. 



Acalyptus peronii. Bum. Sf Bibr. Mem. Ac. 8c. xxiii. 1853, p. 522. 

 superciliosus, Dum. 8f Bibr. vii. p. 1340 ri854) ; Giinth. 



Mept. Brit. Ind. p. 359 (1864) ; Jan, Icon. Gin'. 40, pi. ii. fig, 2 . 



(1872). 



Head rather small. Diameter of neck one third to two fifths 

 the greatest depth of the body. Eye a little longer than its 



