198 ; PELOMEDUSID &. 
Pelomedusa gehafie, Gray, Cat. Tort. p. 38 (1844), and Sh. Rept. 
i. p. 53 (1855), and Suppl. p. 81 (1870) ; Sclater, Proe. Zool. Soe. 
1871, p. 325, fig. 
subrufa, Gray, Ul. cc., and App. p. 24 (1872). 
_Pentonyx americana, Cornalia, Vert. Syn. Mus. Mediol. p. 15 (1849). 
Pelomedusa mozambiea (Peters), Gray, Cat. Sh. Rept. p. 53. 
nigra, Gray, Ann. & Mag. N. H. (3) xii. p. 99 (1863), and 
Suppl. Cat. Sh. Rept. p. 81. 
Hydraspis galeata (Bell), Sowerby § Lear, Tort. pls. xlix. & 1. (1872). 
Fig. 48. 
Skull of Pelomedusa galeata. 
Carapace much depressed, obtusely keeled ; first vertebral shield 
largest, a little broader than long. Plastron much smaller than the 
opening of the shell; front lobe truncate, broader than the hind 
lobe, which is angularly notched ; the width of the bridge contained 
thrice and a half to four times in the length of the plastron ; inter- 
gular shield much longer than gulars; pectoral and abdominal 
shields nearly equally developed on the bridge; pectorals either 
forming a median suture, very variable in length, or separated from 
each other. Head short, broad; five large shields on the upper 
surface, viz. a pair of frontal-supraorbitals, a pair of parietals, and a 
