72 TiSTCDlNlDiE. 



1 . Clirysemys picta, 



istudo picta, Schneid. SchUdkr. p. 348 (1783) ; Schoepff, Testud. 

 p. L>0, pi. iv. (1792); Daud. liept. ii. p. 104 (l«02j ; Lecojite, 



Testudo 



llu„.'L)/c. N. r. iii. p. 115 (18:50). 



cinerea, Schneid. Schr. Ges. Katurf.Fr. x. p. 208 (1792). 



Eniys picta, Schtceii/(/. I'rodr. p. 37 (l8l4) ; Sai/, Juurn. Ac. Philad. 



iv. p. 211 (182o)"; Dum. 8,- Bibr. ii. p. 297 (1835); IIolhr.N.Am. 



Hi, p. i. p. 7o, pi. X. (1842); Bekmi, Fmm. N. Y., Rept p. 12, 



j.l. V. fig. 10 (1842) ; Gray, Cat. Tort. p. 27 (1844) ; Wied, N. 



Acta Ac. Leop.-Carol. xxxii. i. p. 12 (18(Jo). 

 TeiTapoue picta, lionap. Osserv. s. sec. Ed. d. R. A. p. 158 (1830). 

 Chrvseiiivs picta. Gray, Cat. Sh. Rept. i. p. 32 (1855) ; Ayassiz, 



Contr.^N. II. U. S. i. p. 438, pi. i. fin-.s. 1-5, & pi. iii. fig. 4 (1857) ; 



Grai/, ISuppl. Cat. Sh. Rept. i. p. 39 (1870), and Ann. ^- May. N. 



H. (4) xi. p. 146 (1873). 

 Cleinmys picia, Sf ranch, Chelon. Stud. p. 129 (1862), and Verth. 



Schiidkr. p. 83 (1805). 



Carapace mucli depressed, quite smooth, without trace of a keel, 

 even in the young ; nuchal and anterior marginals elongate, with 

 denticulated edge in the adult ; fir.st vertebral shield much Jiarrower, 

 and usually shorter, than second, not or but little broader in front 

 than behind ; vertcbrals 2 to 4 broader than long (second sometimes 

 as long as broad), as broad as or broader than the costals, the 

 antero-latcral borders much shorter than the postero-latcrals ; 

 posterior margin of carapace not serrated. Plastron very large, as 

 large as the opening of the shell ; front and hind lobes truncate, 

 and sometimes finely denticulated at the end ; the Avidth of the 

 hind lobe is more than two thirds the width of the carapace in the 

 adult, and its length equals the width of the bridge ; the largest 

 shields are the abdominals, which are about twice as long as the 

 pectorals ; gulars and anals subequal in length ; the shortest 

 median suture is that between the humerals ; inguinal and axillary 

 large, latter largest. Head moderate ; snout short, feebly pro- 

 jecting ; u]i]ier jaw with a small median notch and a small cusp on 

 each side, the edge not or but very slightly deiiticulated ; alveolar 

 surfaces moderately broad, with feeble median ridge ; the width of 

 the mandible at the symphysis is much less than the horizontal 

 diameter of the eye. Digits webbed to the claws, which are very 

 long in the adult, especially males *. Tail one half to two thirds 

 the length of the shell in the young, one third to two fifths in the 

 males, less than one third in the females. Carapace dark brownish 

 olive or blackish, with a yellow vertebral line and a broad yellow 

 band on the anterior line of the vertebral and costal shields (exclusive 

 of the first) ; this yellow border forms a continuous, nearly straight 

 baud across the carapace between marginals 7 ; marginals red, with 

 black concentric or crescentic markings ; plastron yellow, usually 

 uniform, sometimes with a small symmetrical blackish marking on the 



* Ma'fs may be distinguished bj- the position of the anus, which opens 

 beyond tlie border of the carapace. 



