1. STERNOTH HRUS.— 2. PELOMEDUSA, 197 
6. Sternotherus gabonensis. 
Pentonyx gabonensis, A. Dum. Arch. Mus. x. p. 164, pl. xiii. fig, 2 
(1860); Gray, Ann. § Mag. N. H. (3) xiii. p. 168 (1864). 
Pelomedusa gabonensis, Strauch, Chelon. Stud, p. 45 (1862), and 
Verth. Schildkr. p. 107 (1865). 
Sternotherus gabonensis, Bocage, Jorn. Sc. Lisb. i, p. 57 (1866). 
This species is founded upon a quite young specimen which, 
judging from the figure, agrees with S. derbianus in the comparative 
size of the humeral and pectoral shields, with S. adansonii in the 
shortness of the abdominal shields. Carapace and plastron blackish 
brown. 
Gaboon, Angola. 
2. PELOMEDUSA. 
Pelomedusa, Wagl. Syst. Amph. p. 186 (1830); Gray, Cat. Tort. 
p. 387 (1844), and Sh. Rept. 1. p. 52 (1855) ; Strauch, Chelon, Stud. 
p. 44 (1862); Gray, Suppl. Cat. Sh. Rept. i. p. 81 (1870). 
Hydraspis, part., Gray, Syn. Rept. p. 89 (1831). 
Pentonyx, Dum. § Bibr, ii. p. 889 (1835). 
Mesoplastral bones small, lateral, wedged in between the hyo- 
and the hypoplastra; plastron narrow, without hinge. Skull 
without supratemporal roof, the quadrato-jugal widely separated 
from the parietal; alveolar surface of the upper Jaw with a very 
indistinct median ridge; a pair of shields, separated by a longi- 
tudinal suture, between the eyes, followed by a large interparietal. 
Digits very short, mostly with only two phalanges; five claws to 
each foot. 
Africa and Madagascar. 
1. Pelomedusa galeata. 
Testudo galeata, Schoepff, Test. p. 12, pl. ii. fig. 1 (1792); Daua, 
Rept. ii. p. 186 (1802). 
badia, Donnd. Zool. Beitr. iii. p. 84 (1798). 
subrufa, Daud. 1. c. p. 132. 
Emys olivacea, Schweigg. Prodr. p. 88 (1814). 
galeata, Schweigg. 1. c. 
subrufa, Schweegg. l.c. p. 89. 
Pelomedusa galeata, Wagl. Syst. Amph. pl. ii. figs. xxxvi.-xliii. 
(1830) ; Strauch, Chelon. Stud. p. 150 (1862), and Verth. Schildkr, 
p- 111 (1865); Bouleng. Bull. Soe. Zool. France, 1880, p. 146 ; 
Boettg. Abh. Senck. Ges. xii. p. 410 (1881); Peters, Reise n. 
Mossamb. iii. p. 6 (1882) ; Bocage, Jorn. Se. Lish.x. p. 202 (1887) ; 
Boettg. Ber. Senck. Gres, 1888, p. 15. 
Hydraspis subrufa, Gray, Syn. Rept. p. 389 (1851). 
Pentonyx capensis, Dum. § Bibr. ii. p. 390, pl. xix. fig. 2 (1835); A. 
Dum. Arch. Mus. x. pl. xiii. fig. 3 (1860). 
— gehatie, Riippell, N. Wirbelth. Faun. Abyss. p. 2, pl. i, (1835) ; 
A, Dum. Cat. Méth. Rept, p. 18 (1851), and Arch. Mus. vi. p. 245 
(1852), & x. pl. xiii. fig. 4. 
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