49. KINOSTERNON 967 



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 j shell 

 usually olive; upper border of ninth marginal nearly 

 straight. 



K. sonoriense. p. 967. 



a*. 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. flavscens. p. 970. 



222. Kinosternon sonoriense Le Conte 



SONORAN MUD TURTLE 



Plates 120 and 121 



Kinosternum sonoriense LE CONTE, Proc. Acad. Nat. Sci. Phila., 1854, 



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

 Thyrosternum sonoriense AGASSIZ, 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, Kept., p. 3. 

 Platythyra Jlavesccns AGASSIZ, Contributions Nat. Hist. U. S., Vol. I, 



1857, p. 430 (part), Vol. II, pi. V, figs. 11-15; BAIRD, U. S. Mex. 



Bound. Surv., Vol. II, 1859, Kept., p. 3; COOPER, Cal. Acad. Sci., 



Vol. IV, 1870, p. 66. 

 Kinosternum 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. W. looth Merid., Vol. V, 1875, p. 583, pi- XVI, 



figs., 1-3; COUES, Surv. VV. looth Merid., Vol. V, 1875, p. 59; 



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. 11, fig. 2; STRECK.ER, Baylor Bulletin, Vol. XVIII, No. 4, 



1915, p. io(?). 



