+9. KINOST£RNON 



closed against the carapace. The plastral plates are separated 

 from the marginals. There are two supracaudal plates. 

 Gular single. The tail is short, with a terminal nail. 



Synopsis of Species 

 a. — Neck mottled with dark and light; shell more elongate, 

 less rounded; barbules on neck more numerous; shell 

 usually olive; upper border of ninth marginal nearly 

 straight. 



K. sonoriens€. — p. 967. 

 z. — Neck less mottled, usually yellow without dark mark- 

 ings below; shell less elongate, more rounded; barbules 

 on neck fewer; shell usually yellowish; upper border 

 of ninth marginal much elevated anteriorly. 



K. flav€scens. — p. 970. 



222. Kinosternon sonoriense Le Conte 



SoNORAN Mud Turtle 



Plates 120 and 121 



Kinostenium sottoriense Le Conte, Proc. Acad. Nat. Sci. Phila., 1854, 



p. 184 (type locality, Tucson, Arizona). 

 Thyrosternitrn sonoriense ho.KS&iz, Contrib. Nat. Hist. U. S., Vol. I, 



1857, p. 428, Vol. II, pi. V, figs. 8-1 1 ; Baird, U. S. Mex. Bound. 



Surv., Vol. II, 1857, Rept., p. 3. 

 Platythyra flavescens Acassiz, Contributions Nat. Hist. U. S., Vol. I, 



1857, p. 430 (part). Vol. II, pi. V, figs. 12-15; Baird, U. S. Mex. 



Bound. Surv., Vol. II, 1859, Rept., p. 3; Cooper, Cal. Acad. Sci., 



Vol. IV, 1870, p. 66. 

 Ktnosternum henrici Le Conte, Proc. Acad. Nat. Sci. Phila., 1857, 



p. 4 (type locality. New Mexico); Cope, Bull. U. S. Nat. Mus., 



No. 17, 1880, p. 13 (?). 

 Cinosternum henrici Cope, Bull. U. S. Nat. Mus., No. i, 1875, p. 53; 



Yarrow, Surv. VV. looth Merid., Vol. V, 1875, p. 583, pi. XVI, 



figs., 1-3; CouEs, Surv. W. looth Merid., Vol. V, 1875, p. 590; 



True, Bull. U. S. Nat. Mus., No. 24, 1883, p. 31; Boulenger, Cat. 



Chelonians Brit. Mus., 1889, p. 40; Ditmars, Reptile Book, 1907, 



p. 26, pi. II, fig. 2; Strecker, Baylor Bulletin, Vol. XVIII, No. 4, 



1915, p. 10 (?). 



