297 



Height 49; head about 12, 3.8 times in trunk; head and 

 trunk one and a half times in length of tail. Eye about 15, 

 twice or more in snout. Snout depressed, somewhat pointed. 

 Posterior nostrils slightly before eye, anterior nostrils in a tube 

 nearly equal to length of eye. 

 Cleft of mouth reaching far 



'00 



behind eye, about thrice in O o o o - O0o 

 length of head. Dorsal com- foj <&*$ 



0<?o <> 



mencing about half length of oy o oo 'SSsl 

 head behind gillopenings. fg$ O fe$ "{"So 

 Dorsal and especially the anal Slf %& J? 

 elevated, the latter being as ?^ s*j& **- 



O o o o 



deep as the body, ending at $&/ 



a short distance from end of S S 



tail. Pectorals 4 times in head. Fig. 139. Dentition of Pisoodonophis 

 Teeth granular, in Several hP^pterus.a teeth on intermaxillary plate, 



r . m maxillary, md mandibulary, v vomerine 



series, forming broadish bands. teeth ^ 



The vomerine band much 



longer than the maxillary bands. On the intermaxillary plate 

 an oval group of about 12 teeth, contiguous with the maxil- 

 lary and the vomerine band of teeth. Greenish, fins yellowish. 

 Length more than 750 mm. [Type of-the species in the British 

 Museum seen by us]. 



Habitat: Borneo (Banjermassin!); Ponape. 



Ascending rivers. 



2. Pisoodonophis boro (Ham. Buch.) [Fig. 138, on p. 296]. 



Ophisurus boro Hamilton Buchanan, Fish. Ganges 1822, p. 20, 363. 

 Ophisurus harancha Hamilton Buchanan, Ibid. p. 21, 363. 

 Ophisurus caudatus McClelland, Calcutta Journ. Nat. Hist. V. 1844, p. 21 1. 

 Ophisuriis boro Cantor, Journ. Asiat. Soc. Bengal XVIII. 1850, p. 1304. 

 Ophisurus boro Bleeker, Verh. Batav. Gen. XXV. 1853, Bengalen p. 156. 

 Ophisurtis potamophilus Bleeker, Nat. Tijdschr. Ned. Indie V. 1853, p. 458. - 



Verh. Batav. Gen. XXV. 1852, Muraenoid. p. 68. 

 Pisoodonophis boro Kaup, Cat. Apod, fish 1856, p. 17. 

 Pisoodonophis potamophilus Kaup, Ibid. p. 20. 

 Pisoodonophis boro Bleeker, Atl. Ichth. IV. 1864, p. 62. 

 Pisoodonophis potamophilus Bleeker, Ibid. p. 63. 

 Ophichthys boro Gunther, Cat. Brit. Mus. VIII. 1870, p. 77. 

 Ophichthys boro Day, Fish. India 4. 187888, p. 664. 

 Ophichthys boro Max Weber, Siboga-Expeditie, Fische, 1913, p. 51. 



Height 32 36; head 9 12.5, 3.2 3.6 in trunk, head and 

 trunk more or less than i ! / 2 times in tail. Eye 12 17 (13.3 in 



