TOMISTOMA. 3 



uncinate processes. Manus with five well-developed digits, pes 

 with four. A dorsal armour of bony plates. Ears with moveable 

 opercles. Pupil vertical. 



Carnivorous, more or less aquatic Eeptiles, laying hard-shelled, 

 elongate eggs. 



Of the six recent genera, tuo are represented in the Malay 

 Peninsula : — 



Nasal bones widely separated from the nasal 

 apertm-e ; splenial bones entering the mandibular 

 symphysis, which extends to the 14th or 15th 



tooth ; snout very narrow and elongate j j-g~jy 



teeth on each side Tomistoma, p. 3. 



Nasal bones entering the nasal aperture ; splenial 

 bones not entering the mandibular symphysis, 

 which does not extend beyond the 8th tooth ; 



snout broad and tapering ; jjriT^ teeth on each 



side Crocodilus, p. 4. 



Genus TOMISTOMA. 

 S. Miill. Arch. f. Nat. 1846, p. 122. 



20 or 21 upper and 18 or 19 lower teeth on each side, the 

 laterals received into interdental pits ; fifth maxillary tooth 

 largest ; first and fourth mandibular teeth fitting into notches 

 in the upper jaw. Snout very long and narrow ; nasal bones 

 not extending to the nasal opening, but in contact with the 

 prsemaxillaries ; nasal opening smaller than the supratemporal 

 fossae ; a small anterior bony plate in the upper eyelid. Man- 

 dibular symphysis very long, extending to the 14tli or 15th tooth, 

 comprising the splenial bones. A dorsal shield formed of fou 

 longitudinal series of juxtaposed, keeled, bony scutes. 



A single species. 



1. Tomistoma schlegelii. 



Crocodilus {Gavialis) schlegelii, S. Miill. Tijdschr. v. Nat. en Physiol. 



V, p. 77, pi. iii (1838). 

 Tomistoma schlegelii, Gray, Tr. Z. S. vi, p. 134 (1867) ; Bouleng. Cat. 

 • Ohelon. &c. p. 276 (1889) ; id. P. Z. S. 1896, p. 628 ; S. Plower, 



P.Z. S. 1899, p. 622; Butler, Jouru. Fed. Malay States Mus. i, 



p. 1 (1905). 



Malay name, Buaga jenjulong. 



Snout 3 to 3;! times as long as broad at the base. Nuchal and 

 dorsal scutes forming a single continuous shield, composed of 

 22 transverse series, the broadest of which contains 6 scutes, 

 the 4 anterior (nuchals) only two ; two small postoccipital scutes. 

 Fingers webbed at the base ; outer toes extensively webbed. A 

 strong crest on the outer edge of the leg. Scales on the limbs 

 keeled. Dull olive-green above, finely and closely spotted with 



B 2 



