276 



a, h. Ad. & ligi'., stflU. 



c. Hgr., stffd, 



d. Yg., stffd. 



e. Ad., skull. 



/. Ad., skill 1 (without 



lower jaw). 

 .</• Yg., spir. 

 k. Yg., spir. 

 i. Yg., stffd. 

 k, I, m. Yg., stffd. 

 n. Ad., skull. 

 0. Ad., skull (imperfect). 

 p. Hgr., skull. 

 q, r, s, t. Ad. & yg., skulls. 



2. TOMISTOMA. 



Mecistops, part., Gray, Cat. Tort. ^x. p. 57 (1844). 



Tomistoma, S. Midler, Arch. f. Nat. 1846, p. 122 ; Grai/, Cat. Sh. 



Hcpt. ii. p. 6 (1872). 

 Rhyucliosuchus, Jluxley, Jonrn. Linn. Soc. iv. p. 10 (1800). 

 Gavialis, part., Strauch, Syn. Crocod. p. 02 (1800). 



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

 received into interdental pits ; fifth maxillary tooth largest * ; man- 

 dibular teeth, first and fourth fitting into notches in the upper jaw. 

 Snout very narrow and elongate ; n-isal bones not extending to the 

 nasal opening, but in contact with the proemaxillaries ; nasal opening 

 smaller than the supratemporal fossoD; a small anterior bony plate 

 in the upper eyelid. Mandibular symphysis very long, extending 

 to the 14th or 15th tooth, comprising the splenial bones. A dorsal 

 shield formed of four longitudinal scries of juxtaposed, keeled, bony 

 scutes. 



Borneo. 



1. Tomistoma schlegelii. 



Crocodilus (Gavialis) schlegelii, S. Milller, Tijdschr. v. Nat. en 

 P/iysiol. v. p. 77, 1)1. iii. (1838) ; Schley. •$• Mull, in Tcmminch, 

 Verh. Nat. Nederl. Ind., Rept. p. 18, pis. i.-iii. (1844j ; Blainv. 

 Ostcoyr. Rept. (1804). 



Mecistops journei, part., Gray, Cat. T'ort. ^-c. p. 58 (1844). 



Kliyuchosucbus schlegelii, Huxley, Journ. Linn. Soc. iv. p. 18 (1800). 



Gavialis schlegelii, Strauch, Syn. Crocod. p. 62 (1800). 



Tomistoma schlegelii. Gray, Trans. Zool. Soc. vi. p. 134 (1807), and 

 Cat. Sh. Rept. ii. p. (1872j. 



Snout thrice to thrice and a half as long as broad at the base. 

 Nuchal and dorsal scutes forming a single continuous shield, com- 



* The young have five teeth in each piwmaxilla like the Gavial and all 

 young Crocodiliaus except Caiinaii trigonotus and i^alpchrosus ; the second tooth 

 disappears with age, as normally in Crocodilus cataphractus, niloticus, and 

 porosus. 



