1. CINOSTERNUM. on 
Plastron without trace of a notch, front 
lobe longer than the fixed portion ; 
gular shield not more than half the 
length of the front lobe.......... 9. leucostomum, p. 42. 
Plastron without trace of a notch, front 
lobe not longer than the fixed por- 
tion; gular more than half the 
length of the front lobe.......... 10. berendtianum, p. 43. 
B. Cdrapace tricarinate.......... 11. cruentatum, p. 44. 
1. Cinosternum odoratum. 
Testudo pensylvanica, B., Schoepff, Test. p. 110, pl. xxiv. fig. B 
(1792). 
shee (Bosc), Daud. Rept. ii. p. 189, pl. xxiv. fig. 3 (1802) ; 
Leconte, Ann. Lyc. N. Y.1ii. p. 122 (1880). 
? Testudo glutinata, Daud. 1. c. p. 194, fig. 4. 
Emys odorata, Schweigg. Prodr, p. 44 (1814). 
Terrapene boscii, Merr. Tent. p. 27 (1820). 
odorata, Merr. U. e. 
Cistuda odorata, Say, Journ. Ac. Philad. iv. pp. 206, 216 (1824). 
Sternotheerus odoratus, Bell, Zool. Journ. 1. p. 507 (1825); Holbr. 
N. Am. Herp. i. p. 185, pl. xxii. (1842) ; Weed, N. Acta Ac. Leop.- 
Carol. xxxii. i. p. 43 (1865). 
boscii, Bell, d. c. p. 308. 
Kinosternum odoratum, part., Bonap. Osserv. sulla sec, ediz, del 
© Regno Animale,’ p. 168 (1880). 
Kinosternon odoratum, Gray, Syn. Rept. p.85 (1831), and Cat, Tort. 
p. 43 (1844) ; Leconte, Proc. Ac. Philad. 1854, p. 185. 
Staurotypus odoratus, Dum. & Libr. ui. p. 458 (1859). 
Kinosternum guttatum, Leconte, 1. ¢. 
Aromochelys odorata, Gray, Cat, Sh, Rept. i. p. 46 (1855) ; Strauch, 
Chelon, Stud. p. 140 (1862), and Verth. Schildkr, p. 94 (1865) ; 
Gray, Suppl. Cat. Sh. Rept. i. p. 66 (1870). 
Ozotheca odorata, Agass. Contr. N. H. U. S. i. p, 425, pl. iv. figs. 1-6 
(1857). 
— tristycha, Agass. /. ¢. pl. v. figs, 20-22. 
Aromochelys guttata, Strauch, Chelon. Stud. p. 39, 
tristycha, Strauch, 1. ¢. 
Head large ; jaws very strong, upper not hooked ; symphysis of 
the mandible about half as long as the whole mandible. Limbs 
extensively webbed. Carapace keeled in the young, the keel usually 
disappearing in the adult; first vertebral shield narrow, much 
narrower than the second, third and fourth not longer than broad. 
Plastron narrow, the width of the posterior lobe not more than half 
that of the shell; lobes slightly, if at all, movable ; bridge narrow ; 
front lobe rounded anteriorly, hind lobe notched posteriorly ; gular 
shield well developed, triangular, about as long as the suture 
between the bumerals, which nearly equals that between the 
pectorals; axillary and inguinal shields largely in contact. The 
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