8. MALACOCLEMMYS. 91 
surface still broader than in MW, terrapen; the width of the mandible 
at the symphysis exceeds the horizontal diameter of the orbit. 
Limbs broadly webbed, scaly. Tail of male nearly half the length 
of the carapace. Olive above, reticulated with yellowish; plastron 
yellowish, uniform or with wavy dark lines. Head and neck dark 
olive or blackish, with numerous yellowish lines; a large triangular 
yellowish spot hehind the eye, above the tympanum ; limbs and tail 
streaked or marbled with black and yellowish. 
Length of shell 22 centim. 
Mississippi Valley to Pennsylvania and New York. 
a. Her. 3, spir. Pennsylvania. 
b. Her., skel. Louisiana. 
ce. Her., skel. N. America. Dra Ja. Gray (Pal. 
d, Ad., skel. N. America. Smithsonian Institution. 
3. Malacoclemmys lesueurii. 
Lesueur, Mém. Mus. Paris, xv. p. 267 (1827). 
Emys lesnouris Gray, Syn. Rept. p. 31 (1831). 
geooraphica, part., Dum. § Bibr. i. p. 256 (1835 
pseudogeographica, Holbr, N. Am. Herp. ik 0) 103, pl. xv. (1842); 
Dekay, Faun. N. Y., Rept. p. 19, pl. 11. fig. 5 (1842) ; A, Dum. Cat. 
Meth. Rept. p. 9 (1851) ; Gray, Cat. Sh. Rept. i. p. 29 (1855) ; 
Wied, N. Acta Ac. Leop.-Carol, xxxil. i. p. 31 oe 
Graptemys lesueurii, Agass. Contr. N. H. U. S. i. p. 436, pl. i 
figs. 10-12 (1857). 
Clemmys pseudogeographica, Strauch, Chelon. Stud. p. 33 (1862), 
and Verth. Schildkr. p. 80 (1865). 
Graptemys pseudogeographica, Gray, Ann. § Mag. N. H. (8) xii. 
p. 180 (1863), and Suppl. Cat. Sh. Rept. i. p. 45 (1870). 
Malacoclemmys pseudogeographicus, Cope, Cheek List N. Am. Rept. 
p- 53 (1875). 
lesueuri, True, wr Yarrow, Check-List N. Am. Rept. p. 34 
(1882). 
Allied to M. geographica, but vertebral keel stronger, ending in a 
tubercle on each shield ; posterior border very strongly serrated, each 
marginal being notched ; anterior border often openly emarginate. 
Head smaller. Carapace brown or olive, with yellowish reticula- 
tions ; a large dark brown spot on each vertebral and costal shield; 
plastron yellowish, marbled with brown, or with broad dark vermi- 
culate bands. Head and neck with yellow lines; a crescentic or 
angulated, broader, yellow transverse streak behind the eye. 
Length of shell 24 centim. 
Mississippi Valley to Wisconsin and Ohio. 
a, b, c, d,e, f. Ad., hgr., & Louisiana. W. P. Smith [C.]. 
yg., st 
g. Her., spir. Mississippi. 
h. Ugr., spir. N. America. Smithsonian Institution. 
z. Ad., stftd. N. America. Dr. J. E. Gray [P.]}. 
k, Ad., stffd. N. America. 
1. Ad., shell. N. America. Smithsonian Institution. 
