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666 REPTILES—CINOSTERNIDZ. 
Kinosternon pennsylvanicum, BELL, BONAPARTE#, LECONTE, HOLBROOK, DxKay, GRay. 
Cinoslernon pennsylvanicum, WAGLER, DUMERIL and BiBRON. 
Thryrosternum pennsylvanicum, AGASSIZ. , 
Color of carapax dusky brown, of plastron yellow or orange with dark blotches; some- 
times having the sutures margined with black; head and neck brownish, with whiter 
stripes and spots; feet and tail chestnut, lighter beneath; carapax oval, emarginate 
behind ; first vertebral shield triangular, its apex posterior and truncate; second, third, 
and fourth hexagonal; costals large; marginals elevated; plastron notched behind ; 
abdominal plates articulating with the pectorals and preanals by more or less movable 
sutures; sternal shields all deeply sculptured with parallel and angular lines; head 
large; upper and lower jaw with a curved tooth-like projection; anterior limbs with 
two scaly folds above, sma)l scales beneath, and terminating in five short claws; tail 
short with lateral tubercular processes and terminating in a horny point. Length of 
carapax, 4 inches; height of carapax, 1 4-5 inches; length of tail, 7 lines. 
Habitat, New York, Pennsylvania, New Jersey, Florida, Alabama, Louisiana, Ohio, 
and Michigan. é 
This animal is found in ditches and muddy ponds; it feeds upon fish 
and small aquatic reptiles, and emits a strong musky odor. 
Genus AROMOCHELYS. Gray. 
Head sub-quadrangular, pointed, and very large; jaws powerful; plastron cruciform, 
with a trausverse more or less movable suture anterior to pectoral plates, but immovable 
behind; posterior end of plastron broadly notched or truncate ; toes five; fingers five; 
tail moderate ; carapax somewhat carinated at least in the young; chin with warts; sup- 
plemental plates between the plastron and carapax contiguous to both. 
AROM6CHELYS ODORATUS Latreille. 
Muske Tortoise. 
Testudo odorata, LATREILLE, DAUDIN, LECONTE. 
Testudo pennsylvanica, SCHG:PFF. 
Cistudo odorata, SAY. 
Emys odorata, SCHWEIGGER, HARLAN, KIRTLAND. 
Sternotherus odoratus, BELL, HARLAN, HOLBROOK, STORER, DEKay. 
Sternotherus boscit, BELL, 
Kinosternon odorata, GRAY, LECONTE, 
Kinosternum shavianum, BELL, 
Staurotypus odoratus, DUMERIL and BIBRON. 
Ozotheca odorata, et tristycha, AGASSIZ. 
Ozotheca odorata, ALLEN. 
Aromochelys odoratus, COpE, JORDAN. 
Color of carapax olive to brown or green; head and neck similarly colored, with 
yellow stripes on each side; plastron black and yellow; colors very much obscured by 
the adhering mud; pupils black; irides golden; anterior marginal plate very narrow, 
broadest behind; first costal very large, the second and third pentagonal, the two upper 
sides much the shortest, the anterior and posterior margins longest; four hinder mar- 
