190 



Frontal more long than broad, longer than its distance from 

 the tip of the snout, shorter than the parietals; one prae- and 

 two postoculars; temporals 1 + 3 or 2 + 3; five upper labials, 

 third entering the eye; three lower labials in contact with 

 the anterior chin-shields, which are a little larger than the 

 posterior. Scales in 25 29 rows; ventrals 130 156, last often 

 divided; anal divided; subcaudals 26 43. 



Yellow, red, brown or black above, spotted or variegated 

 with black, yellowish-white or greenish. Lower surface yel- 

 lowish-white. Length of head and body 820 mm.; tail iiomm. 



Type-specimen examined in the Leiden Museum. 



Habitat: Sumatra (Deli!); Borneo (Kuching, Santubong, 

 Niah, Pontianak. Bandjermassin); Java (Cheribon sea!, Amba- 

 rawa); Timor!; Ceram!; Ambon; New Guinea (Yule Island, 

 Mimika river, Lorentz river, Merauke, Fly river). Singa- 

 pore; Penang; Malay Peninsula; Nicobars; Cochin China; Burma; 

 Bengal ; N. Australia. 



Lives in rivers, estuaries and along the sea-shore; feeds on 

 crustaceans and fish. 



Doubtful species. 



Fordonia papuensis Macleay, Proc. Linn. Soc. N. S. W. II 

 1877, p. 35; Cat. Sn. Ill 1896, p. 23, is perhaps a synonym 

 of F. leucobalia (Schleg.). 



Third labial not entering the eye. Scales in 22 rows. (Not 

 seen by me). 



Habitat: New Guinea (Katow). 



42. Cantoria Girard. 



(GlRARD, Proc. Ac. Philad. p. 182, 1857). 



Head small, not distinct from neck; eye very small; pupil 

 round; shields of head large; nasal partly divided, the cleft 

 beginning at the praefrontal; internasal single, separating the 

 nasals; loreal present. Maxillary teeth 10 or n, posterior 

 longest and grooved; anterior mandibular teeth longest. Body 

 slightly compressed, very long, covered with smooth scales 

 without pits, in 19 rows; ventrals rounded. Tail moderate; 

 subcaudals in two rows. 



Distribution. Burma; Malay Peninsula; Sumatra; Borneo; 

 Timor. 



A single species. 



