{, 
spherical, elevated, with dorsal ridge. Plastron smooth, entire 
behind. Head stout, neck long; legs robust, scaly; tail short, 
conical, 
Dry land. Never frequent water though sometimes found 
in damp places. Uncommon in R. I. R. W. P. Coll., two 
specimens. 
Tt. Chelonia mydas, Linnaeus. 
Green turtle. 
Tesiudo nuydas, Linnaets. 
Testudo viridis, Schneider. 
Length 2 to 6 feet. Color a dull greenish inclining to olive 
brown. Shell smooth, slightly keeled in centre. Fore feet in 
shape of fins, longer than those behind. Two nails on each 
foot. Tail very short. 
Marine. Recorded from R. I. 
12. Thalassochelys caretta, Linnaeus. 
Loggerhead turtle. 
Testudo caretia, Linnaeus. 
Chelonia caretta, Linnaeus, Holbrook. 
Length 3 to 6 feet. Median portion of vertebral plates ele- 
vated forming mid-dorsal ridge. Five vertebral, ten costal 
plates. Limbs modified into paddles. A very large species, in- 
dividuals weighing over five hundred pounds. 
Marine. Recorded from R. I. 
SAURIA. 

LACERTILIA. 
3. (1.) Sceloporus undulatus, Latreille. 
Fence lizard ; Swift. 
Sceloporus occidentalis, Baird and Girard, Girard. 
Sceloporus frontalis, Baird and Girard. 
Sceloporus undulatus thayert, Cope. 
Sceloporus longipes, Baird, 
Sceloporus elongatus, Siajneger. 
Lacerta undulata, Daudin. 
Lacerta fasciata, Green. 
Lacerta hyacinthina, Green. 
Tropidolepis undulatus, Cuvier, Holbrook, Gray, Dumeril and 
Bibron, DeKay, Storer. 
Stellio undulatus, Wiegman, Fitzinger, Girard, Cope, Bou- 
lenger. 
Length 7 inches. Color above brownish; male with a 
black patch on posterior half of chin, extending on each side to 
shoulder ; belly with a blue patch on each side, black internally 
and behind. Female lacks the blue and black coloring on under 
