164 DK. J. E. GEAT'S SYNOPSIS OP THE SPECIES 



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. 



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



3. Jacake multiscutata. (Brazilian Jacare.) 

 With sixteen series of ventral shields ; hinder ventral shields very narrow. Dorsal 

 shields in ten longitudinal series, five on each side. 

 Ilab. Brazil. 

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



b. Head elongate, longer than the width at the eighth tooth, ivith none or only indistinct 

 evanescent ridges from the front of the orbit. Cervical disk oblong, elongate, of 

 five series of scutella. 



* Face depressed, broad ; sides of the jaws with a series of large coloured spots. 



4. Jacare longiscutata. (Long-shielded Jacare.) (Plate XXXIV.) 



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 pale, with five or six band-like spots; the inner 

 pairs of the first and second series of cervical scutella large and equal-sized. 

 Jacare longiscutata, Gray, Ann. & Mag. N. H. x. 328, 1862. 



Hab. South America. Brit. Mus. 



This is very like the following ; but the head is rather broader, and the dorsal and 

 ventral shields are much larger, and more numerous. 



It is kno-ma 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. Jacaee ocellata. (Eyed Jacare.) (Plate XXXIII.) 



Dorsal scutella broad, uniformly keeled, in eight longitudinal series in the middle of 

 the body ; ventral scutella in twelve longitudinal series, the hinder ones smaller, longer, 

 and more numerous ; the central pair of cervical scutella in the first series smaller than 

 those that follow. 

 Jacare ocellata, Gray, Ann. & Mag. N. H. x. 329, 1862. 



Ilab. Lake of Santa Cruz de la Sierra. British Museum. 



