7-i TESTUDINID^, 



Vur. bellii. 



Emvs bellii, Gray, Si/n. Rept. p. 31 (1831) ; Dum. ^- Bibr. ii. p. 302 

 (i83-J) ; Gray, Cat. Tort. p. 27 (1844). 



oregonieiisis, Harlan, Amer. Journ. xxxi. p. 3S2, pi. — 



(lS37);'//(>/6/-. N. Am. Herp. i. p. 107, pi. xvi. (1842); Gray, 

 Cat. Tort. p. 23 ; JVied, N. Acta Ac. Leop.-Carol. xxxii. i. p. 35 



Chrvsemys bfHii, Gray, Cat. Sh. Rept. i. p. 33 (1855) : Ai/assiz, 

 Coiitr. N. II. U. S^ i. p. 439, pi. vi. figs. 8 & 9 (1857) ; Gray, 

 Suppl. Cat. Sh. Rept. i. p. 39 (1870), and Ann. <§• Mag. K H. (4) 

 xi. p. 147 (1873). 



oregonensis, Agassiz, I. c. p. 440, pi. iii. figs. 1-3. 



nuttalii, Ayassiz, op. cit. ii. p. ()42 (1857). 



Clemnivs oregoiiiourtis, tStrauch, Chelon. Stad. p. 130 (1862). 



Chivst'inys picta, pai't., Gray, Ann. 8f Mag. N. H. (3) xii. p. 181 

 (1863). 



Clemmys picta, vars. b et c, Strauch, Verth. Schildkr. p. 84 (1865). 



Cliryseniys pulchra, part., Gray, Ann. ^ Mag. N. II. (4) xi. p. 147 

 (1873). 



Larger and less brilliantly coloured. The vertebral streak and 

 the liglit border to the dorsal shields very narrow or absent ; 

 irregular, vein-like yellow lines on the dark olive dorsal shields, 

 which are also sometimes reticulated with black ; each marginal 

 shield above divided in the middle by a yellowish streak ; lower 

 surface of marginals yellow or red with black concentric markings 

 or ocelli. Plastron ornamented all over with a large symmetrical 

 blackish marking, formed of spots, lines, or vermiculations, produced 

 into horizontal branches, and with or without detached spots. 



Length of shell 20 centim. 



United States, "West of the Ohio and the Mississippi, British 

 Columbia. 



«. c?,stfi'd. British Columbia. G. M, Dawson, Esq. [C.]. 



British N. A. Boundary Comm. 

 b, c. Ad., shells. British Columbia. J. K. Lord, Esq. [P.]. 



d. Yg., spir. Walla Walla, Bri- J. K. Lord, Esq. [P.]. 



tish Columbia. 



e. (S , spir. JNlississippi. (One of the types of C. 



/. c?,spir. Mississi])pi. 



g-h, i. 2 & yg., spir, N. America. 



Var. dorsalis. 



pulchra.) 



Chrvsemys dorsalis, Agassiz, Contr. N. H. U. 8. i. p. 440 (1857) ; 



Gray, Sitppl. Cat. Sh. Rept. i. p. 39 (1870). 

 picta, part., Gray, Ann. ^- Mag. N. H. (3) xii. p. 181 



(1863). ^ 



Clemmys picta, vai". d, Strauch, Verth. Schildkr. p. 84 (1865). 



Vertebral shields very wide, as in the young of the allied forms. 

 The yellow median stripe along the carapace is broader than in any 



