198 ON TESTUDO EMYS 



marpjinal, which shield in the shape of a scalene triangle 

 is lying between the 2"'i and S'''^ pair of shields of the 

 plastron , and runs down to the middle of the boundary 

 line between these two shields. 



The specimens of this species were captured in Sumatra, 

 1600 till 1800 feet above the level of the sea, in the 

 neighbourhood of the river Aneh, south of the Goenong 

 Singalang ; and afterwards in the mountains east of Padang. 

 In 1840 the Leyden Museum possessed six specimens, of 

 which four are still present in our collections. 



In 1851 A, Dumeril, in his » Catalogue methodique de 

 la collection des reptiles du Muséum d'Histoire naturelle 

 de Paris", gives a description of a species oiTestudo, which 

 he names Testudo emydoides, and which species he refers 

 to T. emys Schleg. & Mull. His description agrees in all 

 points with that of Schlegel and Muller , except in the 

 enumeration of the shields of the plastron , inasmuch as 

 Dumeril mentions 12 shields composing the plastron, 

 without giving any indication that two of these shields 

 (the pectorals) have a triangular form and do not form a 

 suture together. As the only specimen in the Paris Mu- 

 seum was a specimen from the river Aneh (Sumatra), and 

 presented by the Leyden Museum, I think we may sup- 

 pose that it was one of the six typical specimens and agreed 

 with Schlegel and Müller's description. 



In 1852 J. E. Gray ^) described what he thought to be 

 a new species of the E m y d a e , after a very imperfect 

 shell , wanting several discal shields , from Singapore. He 

 placed this species in a new genus ^Manouria\ characte- 

 rized by its double, separated caudal plates, and its short 

 subtriangular pectoral shields , only occupying the angle 

 between the outer edge of humural and abdominal shields. 

 Gray calls his new species Manouria fusca. 



In his Catalogue of shield-reptiles, 1855, Gray men- 



1) Proceed. Zool. Sec. 1852, p. 134. 



]>7otes from the Leyden ÜMuseutxi, "Vol. XVII. 



