26 



C.VTAl.iHUK OF SHIELD REPTILES. 



i , dnn. A Mag. Nat. Hist L882, s. 



|,. 328 : s L869, n. p. 168. 



Brazil, Pernambuoo (J. J'- O.Smith)', Surinam. 



of the young specimen is as long sis the width 

 at t!u eighth tooth. The nose from the ridges nearly us 

 long a* the bank of the head: width of the muzzle at the 

 noteli one-half the length of the head. 



Far. 1 (three young in spirit). Head short; sides of face 



pale, with a dark spot under each oar and another larger 



under each eye. The lower jaw pale; rive rouud spots on 



each side, the middle one. under the eyes, the largest. 



b black, with interrupted or irregular pale brown cross 



Bab. Pernambuco (J. P. G. Smith). 



The smaller specimen is peculiar for the very small size 

 of the ventral shield in front of the vent. The spots on 

 the side of the face and lower jaw are to be seen in the 

 older specimens when they are between 3 and 4 feet long. 



Var. 2. Head rather larger and narrower. The nose 

 from the ridge rather longer than the back of the head ; 

 width of the notch two-fifths the length of the head. 

 Cheek and side of the lower jaw with five large black 

 spots. Ventral shields in twelve series. Dorsal shields 

 four. 



Hah. South America ; Lake of Santa Cruz de la Sierra. 



3. Jacare multiscntata. (Brazilian Jacare.) B.M. 



With sixteen series of ventral shields ; hinder ventral 

 shields very narrow ; dorsal shields in ten longitudinal 

 -. five on each side. 



Hah. Brazil. 



A skin in the British Museum (46. 7. 10. 41). 



b. Head elongate, longer than the width at the eighth tooth, 

 with none or only iiidistinct evanescent ridges from the 

 front of the orbit. Cervical disk oblong, elongate, of 

 five series of scutella. 



I .. depressed, broad; sides of the jaws with a series of 

 large coloured sjiots. 



4. Jacare longiscutata. (Long-shielded Jacare.) B.M. 



Dorsal scutella elongate, longer than broad, uniformly 



keeled, in ten longitudinal series on the middle of the body ; 



ventral scutella elongate, in fourteen or sixteen longitudinal 

 series ; sides of the jaws palo, with five or six band-like 

 spots ; the inner pairs of the first and second series of cer- 

 vical scutella large and equal-sized. 



Jacaro longiscutata, Gray, Ann. cf- Mag. Nat. Hist. 1862, 

 x. p. 328 ; Trans. Zool. Soc. 1869, vi. p. 164. 



Hah. South America (Brit. Mus.). 



This is very like the following : but the head is rather 

 broader, and the dorsal and ventral shields arc much larger 

 and more numerous. 



It is known from the young of Jacare nigra by its olive 

 colour, the spots on the sides of the jaws, and the presence 

 of the distinct nuchal scutella. 



5. Jacare ocellata. (Eyed Jacare.) B.M. 



Dorsal scutella broad, uniformly keeled, in eight longi- 

 tudinal series in the middle of the body ; ventral scutella 

 in twelve longitudinal scries, the hinder ones smaller, larger, 

 and more numerous ; the central pair of cervical scutella 

 in the first series smaller than those that follow. 



Jacare ocellata, Gray, Ann. # Mag. Nat. Hist. x. p. 329, 

 1862; Trans. Zool. Soc. 1869, vi. p. 164. 



Hab. Lake of Santa Cruz de la Sierra (Brit. Mus.). 



** Face attenuated, rather high on the sides ; sides of the 

 jaws one-coloured. 



6. Jacare punctulata. (Dotted-jawed Jacare.) B.M. 



Back yellow, banded with brown ; the sides of the head 



yellow ; upper and lower jaws yellow, one-coloured, or 



minutely speckled ; sides of the neck smooth, with flat 



scales : nose rather high and square. 



Jacare sclerops, Gray, Cat. Tortoises B. M. p. 64. 

 Crocodilus sclerops, Schn. Amph. p. 162. 



Cuvier, Ann. Mus. & Oss. Foss. v. t. 1. f. 6 & 7, t. 2. 

 f. 3. 



Tiedem. Amph. p. 60, t. 5. 



Guerin, Icon. t. 2. f. 2 & 10. 



Gray, Syn. Kept. p. 62. 



Bum. <f" Bibr. Erp. Gin. iii. p. 79. 



Burm. Gavial, 1. 1. f. 5 & 8, t. 3. f. 1 (head). 

 Crocodilus americanus, Law. from Seba, t. 104. f. 10. 

 Crocodilus caiman, Baud, liept. iii. p. 394. 

 Caiman (Jacaretinga) punctulatus, Spix, Bras. t. 2 (good). 

 Champsa sclerops, Wagner, Syst. t. 7. f. 1, 2, & f. 42. 



Natterer, Beitr. t. 22 (heads good). 

 Alligator punctulatus, Bum. § Bibr. Erp. Gen. ii. p. 91. 



