1. STERN OTnasttus. 195 



a, i. J $, stffd. Natal. 



c. $ , stffd. S. Africa. 



d. Yg., spir. E. Africa. Sir J. Kirk [C 



e. 5, spir. La Digne Isd., Se3'chelle.s. Dr. A. Giintlier [P.J. 



3. Sternothaerus nigricans. 



Testudo uitrricans, Donndnrff, Zuol. licit r. iii. p. 34 (ITUS). 



subiii^Ta, Daud. Itept. ii. p. 197 (1802). 



Emys castaiiea, >ScJiiV('ii/(/. Prodr. p. 45 (1814). 



subuigra, Schiveiyij. I. c. p. 40. 



Terrapene nigricans, Men: Tent. p. 28 (1820). 

 Ivinostornon nigricans, Bell, Zuol. Journ. ii. p. oOo (1825). 

 Sternotlijtriis leachianus, Bell, I. c. p. 300, pi. xv. (1825). 



castaneus, Gray, Syn. liept. p. 38 (1831) ; Duvi. c^- Bibr. ii. 



p. 401 (1835). 



subniger, Gray, I. c, and Cat. Tort. p. 37 (1844), and Sh, 



liept. 1. p. Gi (iooo), ana ^uppi. p. i\) (10/ u). 



nigricans, Dum. ^^ Bibr. p. 309 ; Bianconi, Spec. Zool. Mosamh. 



p. 58, pi. vii. (1851); Stranch, Chelon. Stud. p. 148 (1802) ; Peters, 

 Reise n. Mossamh. iii. p. 8 (1882). 



Carapace obtusely keeled in the young, posterior margin entire ; 

 second and third vertebral shields a little broader than long in the 

 adult. Intcrgular shield large, not twice as Ibng as broad ; suture 

 between the abdominal shields longer than that between the 

 femorals ; the length of the outer border of the pectoral shield 

 equals that of the humeral, and exceeds the lengtli of the inner 

 border of the latter shield. Head large ; snout very short ; upper 

 jaw neither hooked nor bicuspid ; the length of the longitudinal 

 suture between the frontal shields nearly equals the width of the 

 interorbital space. Dark brown above, yellow, or yellow and brown, 

 inferiorly ; upper surface of head without spots or vermiculation. 



Length of shell 15 centim. 



Madagascar ; Mozambique. 



a-c. 5, spir. Madagascar. Dr. A. Giinther [P.]. 



d. $ , stffd. Madagascar. 



e. $, skel. Madagascar. 



/. §, stffd. r' 



(J. Hgr., spir. 







4. Sternothserus derbianus. 



Sternothferus derbianus, Gray, Cat. Tort. p. 37 (1844), and Sh. liept. 

 i. p. 52, pi. xxii. (1855) ; Strauch, Vcrth. Scliildkr. p. 109 (1805) ; 

 Bocaye, Jorn. Sc. Lish. i. p. 57 (1800); Gray, Suj/pl. Cut. Sh. liept. 

 i. p. 79 (1870); Bcctty. Abh. Senck. Ges. xii. p. 409 (1881), and 

 Ber. Senck. Ges. 1888, p. 15. 



Carapace keeled in the young, the keel disappearing in the adult, 

 the shields of which are smooth ; second and third vertebral shields 

 a little longer than broad in the adult. Intergular shield not more 

 than twice as long as broad ; suture between the abdominal shields 



p 



