1912. ] N. ANNANDALE: The Indian Mud-Turlles. 105 
plastron is densely spotted with blackish purple, especially over 
the bones, and the tail is similarly marked. The claws are 
yellow.” 
DISTRIBUTION.—With one exception the specimens of this 
species are labelled as being from Chittagong in the extreme south- 
eastern corner of the old Province of Bengal. The one exception is 
labelled as being from Calcutta, but this locality is probably incorrect 
and in view of the fact that large numbers of Trionychids are im- 
ported into this city for food, carries in any case very little weight 
unless supported by independent evidence. It should therefore 
be ignored, unless it can be substantiated by the capture of speci- 
mens in the Gangetic delta, the probability being that T. mgricans 
is a species intermediate in habitat, as it is in structure, between 
T. gangeticus and T. phayret. 
SPECIMENS :— 
BENGAL, 
1918 (skl.) . Chittagone Tanks ..) A. E. Clay, Esq: 
754 (sk1.) se - = we e 
1908 (skl.) ie 5G a ae a 
1808 (skl1.) 
735 (skl. {types S: - = a: Be 
no skull) 
1849 (sklL.) ee Calcutta, ue Dr. f. Anderson. 
T. mgricans may be stated in general terms to resemble 
T. phayrei in the structure of its skull and mandible and T. gangetr- 
cus in that of its carapace and plastron. In coloration, however, 
it evidently differs from both and neither its skull nor its plastron 
agrees precisely with that of the species which they respectively 
recall. All the specimens appear to be adult and both sexes are, 
to judge from Anderson’s labels, represented. ‘The bony carapace 
of the largest measures 40°3 cm. in length by 46°7 cm. in breadth. 
6. Trionyx phayrei, Theobald (pl. v, fig. 4). 
Anderson, P.Z.S. 1871, p. 154, fig. (plastron): Boulenger, 
Fauna, p. 14: Flower, P.Z.S. 1899, p. 620: Siebenrock, p. 598. 
DISTRIBUTION.—Arrakan, Pegu, Tenasserim, the Malay Penin- 
sula, Sumatra, Java (Max Weber) and Borneo. In Arrakan this 
species occurs in mountain streams and Flower states that he 
found a specimen in a similar situation in Johore. As Mr. H. C. 
Robinson has pointed out to me, the locality ‘‘ Penang’’ must be 
accepted with caution, for there is a Chinese temple on the island 
in which tortoises from many different parts of the Malay Archi- 
pelago are kept. 
SPECIMENS :— 
9755 (skull and Se) Renan: .. Dr. J. Anderson. 
plastron) 
1094 (stuffed: skull o. . ura .. (Purchased). 
separate) 
