CALLAGTJE. 25 



to exist also in the Malay Peninsula {cf. Hanitsch, Eep. Eaffles 

 Mus. 1904, p. 5). A stuffed specimen (shell 400 millira. in length) 

 from Bataug Padang, South Perak, presented by Mr. J. Cornwall 

 in 1902, is preserved in the Selangor Museum, where there is also 

 a carapace from Batu, Tiga, near Kuala Lumpur. A specimen 

 from Peuang: is in the Calcutta Museum. 



Genus CALLAGUR. 

 Gray, Suppl. Cat. Sh. Kept, i, p. 53 (1870j. 



Neural plates elougate, hexagonal, anterior lateral margins 

 shortest. Plastron extensively united to the carapace by suture, 

 with extremely developed axillary and inguinal buttresses, the 

 former connected with the first rib, the latter auchylosed between 

 the fifth and sixth costal plates ; entoplastron anterior to the 

 humero-pectoral suture. Skull with a bon}' temporal arch : 

 alveolar surfaces broad, of upper jaw with a median ridge ; edge 

 of jaws denticulated ; choanse between the eyes. Upper surface 

 of head covered with undivided skin. Digits very broadly webbed. 

 Tail short. 



A single species, of thoroughly aquatic habits ; herbivorous. 



21. Callagur picta. 



Emys trivittata (nou D. & B.), Cantor, Journ. Asiat. Soc. Bengal, 



xvi, p. 610 (1847). 

 Batagur picta, Gray, P. Z. S. 1862, p.«<*M. 



Batafjur affinis, Gunth. Itept. Brit. Ind. p. 40, pi. iii, fig. C (1864). 

 Callagur picta, (jv&\, Suppl. Cat. Sh. Piept. i, p. 53 (1870) ; Boideng. 



Cat. Chelon. p. 60 (1889). 



Malay name, Biid-ic. 



Carapace with a strong continuous vertebral and a feeble inter- 

 rupted costal keel in the young, these keels disappearing in the 

 adult ; nuchal shield absent or extremely small and linear ; second 

 to fourth vertebral shields subequal in length, much broader than 

 long in the young, nearly as long as broad, and nearly as broad as 

 the costals, in the adult ; posterolateral border of the tiiird 

 vertebral shield concave. Plastron large, strongly angulated 

 laterally in the young, convex in the adult, truncate anteriorly, 

 notched posteriorly ; the width of the bridge exceeds the length 

 of the posterior lobe ; the longest median suture is between the 

 abdominal shields ; inguinal shield large, axillary smaller. Head 

 rather small ; snout pointed, produced ; upper jaw feebly notched 

 in the middle. Limbs with transversely enlarged, band-like scales. 

 Brown above, yellowish inferiorly ; carapace with three broad, 

 blackish longitudinal bands. 



Length of shell 420 millim. 



Penang, Selangor, Johore, Borneo, Phihppines. 



