458 



CROCODILIA 



CHAP. 



watercourses, they bury themselves in the mud and remain in a 

 state of torpor till released by the recurrence of rains. 



C. porosus s. liporcatus. -The premaxillo- maxillary suture 

 on the palate does not form a transverse line, but is W-shaped, 



and extends backwards as in the 

 rest of the species of Crocodiles 

 to be described. This Indian 

 species is easily recognised by 

 the prominent longitudinal 

 ridge which extends in front 

 of each eye, over the prefrontal 

 bones, and by the absence of 

 sub-occipital scutes. The nuchal 

 scutes consist of four large ones, 

 which form a square, and one 

 or two smaller scutes on each 

 side. The dorsal shield con- 

 tains four to eight principal 

 longitudinal rows. The digits, 

 webs, and the serrated fringe of 

 the legs are like those of 0. 

 palustris. The head and snout, 

 however, are distinctly longer, 

 and more slender in proportion, 

 and the adult has only four 

 teeth in each premaxilla. The 



view of the skull of eneral colour ig dark olive . 



fc 



Young Specimens, as 

 ^W and are 



FIG 108.-Dorsal 



Urocoduus IHH-OXUS. x about v- Col, 



buttress connecting the postfrontal with brown. 



the jugal and ectopterygoid ; F, frontal ; i 



Jff, jugal ; MX, maxillary ; Na, nasal ; l * 



P, parietal ; I'm, premaxilla ; Pof, post- spotted with black. 



frontal ; Pr.f, prefrontal ; (j, quadrate ; mi , , 



Qj, quadrato-jugal; R, the characteristic ThlS species attains a much 



ridge on the prefrontal bone ; Sq, squa- larger size than the Marsh 



mosal ; T, perforations in the premaxilla ~ ,.. c< c i cr 



caused by a pair of lower incisor teeth. Crocodile. Specimens Ol 



to 20 feet in length are not 



uncommon, and there is a record of one monster of 33 feet. 

 Consequently this is, both in bulk and length, undoubtedly the 

 largest species 6*f recent reptiles. It is essentially an inhabitant 

 of tidal waters or estuaries, frequently entering salt water and 

 going out to sea. Herewith corresponds its wide distribution, 

 namely, the whole coast of the Gulf of Bengal, extending to 



