1864. ] DR. J. E. GRAY ON THE TRIONYCHID&. ae 
oblong, with a short deep concavity at the hinder edge of each, sepa- 
rated by a central longitudinal ridge. The upper jaw with a broad 
oblong alveolar plate on each side behind, edging the side of the inner 
nostrils. The lower jaw rather produced in front; the front alveolar 
edge simple, sharp-edged, the hinder half rather flattened, broad, 
but shelving inwards. Sternal callosities two, lateral, linear. 
1. DoGaniA suBPLANA, Gray, Cat. Tort. B.M. 49 ; Shield Rept. 
69, t.33; Proc. Zool. Soc. 1862, p. 265 ; Cuvier, Oss. Foss. 11. t. 13. 
f. 5 (dorsal disk). (Skull, figs. 1, 2, 3.) 
Hab. Chinaand Formosa. Terrapin of the Europeans in China. 
Sold to make soup. 
2. DoGANIA GUENTHER], Gray, P. Z. 8. 1862, 265. 
Hab. India. 
Face of skull flat, shelving downwards; eyes close together ; 
forehead flat. 
ASPILUS. 
Head elongate, rather depressed. Skull elongate; forehead con- 
vex, short ; orbits submedial. Nose shelving, rather convex. The 
palate slightly concave, with the hinder sides under the orbits rather 
expanded ; narrowed in front, with a narrow deep concavity ; grooves 
of equal width in front of the internal nostrils. The internal nostrils 
oblong, subposterior, on a level with the front edge of the zygomatic 
arches, with a deep elongate groove behind each of them, separated 
by a central longitudinal ridge. The alveolar surface of the upper jaw 
broad, shelving outwards ; the inner edge forming a ridge on the side 
of the inner nostrils. The lower jaw shallow in front, with a broad 
flat alveolar surface, with a sharp simple outer edge, and shelving 
internally. Sternal callosities two, lateral. 
The skull of this genus is figured by Wagler (N. Syst. Amph. t. 2. 
f. 4-9) as Aspidonectes javanicus. 
1. Aspitus caARiNIFERUS. (Skull, figs. 4, 5, 6.) 
Trionyx cariniferus, Gray, Cat. Shield Rept. B.M. 67, t. 32. 
T. stellatus, var. javanicus, Schleg. Faun. Japon. Chelonia, t. 5. 
f. 6 (head ’). 
? Aspidonectes javanicus, Wagler, N. S. Amph. t. 2. f. 1, 12 (ske- 
leton and skull). 
Hab. Java. 
Wagler, in his ‘N. Syst. Amphib.’ t. 2. f. 1, 11, figures a very young 
Trionyx under the name of Aspidonectes javanicus. It is not the 
Trionyx javanicus of Cuvier nor of my catalogue. The head, neck, 
and body are minutely white-speckled; the chin and throat are 
varied with rather larger white spots, and the dorsal disk is speckled 
with white, as in Potamochelys stellatus; but he represents the 
dorsal disk as having six rings of white spots on the hinder part 
near the margin, which I have never seen in this species. Hence 
