22 REPTILES. 



Bell, MSS. Dum. fy Bib. E. Gen. ii. 276. E. reticularia, Bell, 

 MSS. (not Say). T. rubriventris, Leconte, Ann. L. N. York. iii. 

 101. Dum. fr Bib. E. G. ii. 281. Holbrook, N. A. Herpet. 7, 

 t. 6. 



Shell oblong, longitudinally rugose, slightly toothed behind ; 

 olive-brown, varied with irregular pale cross bands, and a ring 

 round the areola; vertebral shields bluntly keeled, 1st urceolate, 

 rest long, sides shelving, beneath yellow, with slightly eyed spots 

 on the sutures of the marginal plates ; sternum flat, with a dark- 

 edged pale streak on the sutures, between the outer sides of the 

 sternal and marginal plates. 



a. Animal and shell, 11^ inches. N. America. 

 b and d. Shell only, 14 inches. N. America. 

 c. Half grown, 6^ inches. N. America. 



The Netted Emts. Emys rivulala. 



Shell oblong, brown, varied with yellow, with a broad central 

 depression, sides longitudinally rugose, hinder edge rather ex- 

 panded, simply serrated ; nuchal plate elongate ; first vertebral 

 plate urceolate, 2nd and 3rd elongate, six-sided, the costal plates 

 with a subcentral, forked or branched, horizontal, yellow band ; 

 under side white, varied with irregular dusky clouds, forming ob- 

 scure rings on the marginal plates. 



a. Shell only, 9^ inches long. N. America. 



D'Orbigny's Emys. Emys D'Orbignii, Dum. <$r Bib. E. Gen. 

 ii.272. D'Orbigny, Voy. Amer. Merid. Rept. t. 1. 



Shell ovate, swollen, nearly smooth, keelless, slightly toothed 

 behind, chesnut-brown, with a black dorsal streak and large trian- 

 gular black spots on the edge of the disk ; first vertebral shield 

 pear-shaped ; sternum black, irregularly edged with yellow ; up- 

 per jaw nicked. 



Inhabits S. America, Buenos Ayres. Mus. Paris. 



The Beautiful Emys. Emys ornata, Bell, MSS. Gray, 

 Syn. 30. Beechey, Voy. t. . bum. & Bib. E. G. ii. 286, (not 

 Synan.) 



Shell oblong, longitudinally rugose, olive ; vertebral shields 

 irregularly ringed, 1st four-sided, 2nd and 3rd rather long, six- 

 sided, costal and marginal shields with black-edged pale rings 

 having a black central dot ; beneath yellow, with round ringed spots 

 on the suture of the marginal plates, and with a dark-edged, irre- 

 gular, greenish line down the centre of the sternum, and a double 

 one the whole length of the sterno-costal symphysis ; head and 

 neck with narrow yellow lines. 



