AMPHIBIANS AND REPTILES. 239 
slide off into the water, or should their bodies be inclined much, 
turn over backwards and then drop in with a splash. They are 
beautifully marked and of elegant color, always appearing as if 
freshly painted. If captured, especially the larger ones, they 
squirm and attempt to get away by clawing. If placed on the 
carapace they turn over by distending the neck, and struggling 
with their legs. They are good swimmers and may frequently 
be seen in the water with only the tip of the nose projecting. 
Often they crawl out on logs or banks. Though variable in 
their color-tints to some extent, they are always of the charac- 
teristic pattern. Very small ones were equally abundant with 
the adults. 
Emys picta Say, Journ. Acad. Nat. Sci. Phila., IV, pt. 2, 1825, 
pp. 205, 211 (ref. infers)—Harlan, Journ. Acad. Nat. Sci. 
Phila., VI, pt. 1, 1825, p. 25 (ref. infers) —Harlan, Med. Phys. 
Res., 1835, p. 151 (copied).—Holbrook, N. Am. Herp., II, 
1838, p. 19, Pl. 3 (ref. infers).—Holbrook, |. c., Ed. 2, I, 1842, 
Dee Seek Ly LO: 
Chrysemys picta Agassiz, Contrib. Nat. Hist. U. S., I, 1857, 
p. 438.—Abbott, Geol. N. J., 1868, p. 800.—Abbott, Nat. Ram- 
bles, 1885, p. 475.—Cope, Am. Nat., XXX, 1897, p. 943.— 
Sone, Ani Nat. XI, 1906, p. 160. 
Genus CLEMMys Ritgen. 
The Wood Tortoises. 
Key to the species. 
a. Carapace usually more or less keeled; upper jaw deeply notched and 
arched downward. 
b. Head not notably narrower below than above; a bright orange blotch 
on each side of neck. MUHLENBERGII 
bb. Head decidedly narrower below than above; no orange blotch on each 
side of neck. INSCULPTA 
aa. Carapace not keeled; edge of upper jaw nearly straight or but slightly 
notched. GUTTATA 
