CATALOGUE OF SHIELD REPTILES. 



27 



shield, three on each abdominal plate (when the horny 

 shields are removed, only concentric rings are seen). 



a. Adult animal and shell (in spirits). North America ; 



Cumberland River. From the Leyden Museum. 

 " E. Troostii," Mus. Leyden. 



The indistinctness of the streak on this animal and marks 

 on the shell may arise from the muddiness of the river, for 

 the specimen was covered in several places with a coat of 

 mud. The peculiar disposition of the colouring is to be 

 seen when the shields of the back are removed from tlie 

 skin. It may not be E. Troosfn of Holbrook, which is 

 said to be a very depressed species. See No. 23. 



18. Emys Floridana. The Florida Emys. 

 Shell oval, gibbous, longitudinally rugose, slightly cari- 

 nated and entire behind, dark brown, with irregular yellow 

 lines ; nuchal shield triangular, beneath yellow, with a half 

 black spot on each edge of the marginal plate above and 

 below ; jaws toothless ; first vertebral urceolate, second and 

 third hexagonal ; plates olive, with several irregular black 

 streaks, longitudinal on the vertebral and transverse on the 

 costal plates. Sternum yellow. Head and neck dark olive, 

 with two pale streaks for each eye, and two on each side of 

 the neck below, the upper one with a branch to the eyes, 

 the inferior pair united together in front of the throat with 

 a single streak to the chin. 



Emys Floridana, Bum. ^-Bib.Erj). Gen. ii. 285; Cat.Meth. 

 R. 12. 



Holbrook, N. A. Herpet. ii. 47. t. 8 ; ed. 2. i. 65. t 8 

 Gra;/, Cat. Tort. B.M. 20. 

 Testudo Floridana, Lecoitte, Ann. Lye. N. Y. ii. 100. 

 Terrapene floridana, Bonap. Obs. Cuv. R. A. 154. 



Hub. North America ; East Florida ; St. John's River. 



A large species, with the shell often 15 or 16 inches 

 in length ; it seems to take the place of E. scripta in 

 Florida. 



19. Emys annulifera. The Ringed TerrapexX. 

 Shell (very young) oblong, with three series of oblong 

 irregular rings on the vertebral plate ; a broad subcentral 

 and some narrower pale lines on each costal plate, as in E. 

 scripta and E. maculata. Sternum pale, with some oblong 

 brown spots on the suture of the shield, and a round spol 

 on the centre of each pectoral shield. Head pale-lined, as 



in E. scripta, but witliout the broad spot or nuchal band of 



that species. 



Emys annulifera. Gray, Syn. Rept. 32 ; Cat. Tort. B.M. 28, 

 Hab. ? 



a. Very young (in spirits). 



§§§ Three spots or sets of rings on each of the costal 

 2)lates1 leaving a forked pale cross streak. 



20. Emys rivulata. The Varied Emys. Tab. XI. 



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

 central depression ; sides longitudinally rugose, hinder edge 

 rather expanded, simply serrated ; nuchal plate elongate ; 

 first vertebral plate urceolate ; second and third elongate, 

 sLx-sided, the costal plates with a subcentral, forked or 

 branched, horizontal, yellow band ; under side white, varied 

 with irregular dusky clouds, forming obscure rings on the 

 marginal plates. 



Emys rivulata, Gray, Cat. Tort. B.M. 22. 

 Hub. North America. 



a. Shell only ; 9| inches long. North America? 



I describe this species with doubt, as I have only seen a 

 single shell in its adult state without the animal. 



The second and third costal plates with an indistinct 

 areola in the higher part of the hinder edge, with two di- 

 verging streaks to the outer margin. The marginal plates 

 divided by a broad central pale streak, sometimes with an 

 obscure indication of a pale lunule. 



Species icith sutural marginal spot, recpiiring further 

 examination. 



21. Emys reticularia. The Chicken Tortoise. 

 Shell ovate, gibbous, not keeled, entire, longitudinally 

 rugose, dusky brown ; costal shield with an equal subsuperior 

 ring, giving out diverging, sometimes anastomosing pale 

 lines ; marginal plate with a central transverse pale streak. 

 Sternum yellow, with a spot on the symphysis and on some 

 of the sides of the margin. Head and neck dark brown, 

 with narrow yellow lines ; throat dusky yellow, with three 

 yellow streaks ; a streak from the nostril extended on the 

 side of the neck. 



Testudo reticularia, Latr. Rept. i. 124. 

 Emys reticularia, Merrem, Tent. 29. 



Gray, Syn. 2/ ; Cat. Tort. B.M. 25. 



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