EMYDID&. — CXXII. 209 
keel of carapace stronger, each plate of the vertebral series with a 
blackish projection behind, which is more or less imbricated over 
the succeeding plate; plastron yellowish, marbled with blackish ; 
head, neck, and legs with bright yellow stripes. Wis. S. W. 
311. MALACLEMMYS Gray. (padakés, soft; xdéupus, 
tortoise.) 
(Lower jaw without spoon-shaped dilatation; the cutting edges smooth.) 
610. M. centrata (Latr.). SaLt-marsH TurTLE. D1amonp- 
Back. Greenish or dark olive, rarely black; plates, both of cara- 
pace and plastron, usually with concentric dark stripes; shell 
smooth or with concentric grooves. N. Y. to Texas, along the 
coast; valued as food. 
312. PSEUDEMYS Gray. (evdjys, false; éuvs, a mud turtle.) 
a. Loose skin between legs without scales; ridge in alveolar surface tubercu- 
late; young marked with confluent, lozenge-shaped figures. 
b. Jaws coarsely serrated; symphysis of upper with prominent hook. 
611. P, rubriventris (Lec.). REp-BELLIED TERRAPIN. Dusky, 
with irregular red markings above; marginal plates with much red ; 
plastron red or partly yellowish; head and neck brown, with red- 
dish lines; variable. N. J. to Va. 
66. Jaws not serrated. 
612. P. hieroglyphica (Holbrook). Shell smooth, depressed ; 
olive brown, variously marked with reticulated or concentric 
yellowish lines; plastron yellowish ; head and neck with yellow 
lines; head small. N. Y. to Wis. and S. 
aa, Loose skin between legs not scaly; ridge in alveolar surface not tubercu- 
lar; edge of marginal plates notched. Vertebral plates with length- 
wise bands, other scales with transverse bands, these growing obscure 
with age. 
ce, Carapace not keeled. 
613. P. troosti (Holbrook). YELLOW-BELLIED TERRAPIN. 
Greenish-black, lateral plates with horn-colored lines and spots; 
plastron dull yellow, with large, black blotches ; throat with green- 
ish stripes; shell never keeled. Miss. Valley, N. to Il. 
614. P. elegans (Wied). Brown, with yellowish wavy lines and 
blotches; a red or yellow band on each side of neck; plastron 
yellow with a dusky blotch on each plate. Ill. to Idaho, and S. 
cc, Carapace strongly keeled. 
615. P. seripta Schépf. Dark brown, with irregular yellow 
stripes; plastron yellow with small black blotches in front; head 
and neck black, with yellow lines; carapace wrinkled. Va. 
to Fla. 
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