134 



1. Manouria fusca. 



Pale brown, nearly uniform ; discal shields concentrically grooved, 

 with a central areola ; the anterior and posterior lateral margins acute, 

 slightly sinuated and rather bent up ; the humeral and abdominal 

 plates longer than broad, the abdominal very large ; the gular pro- 

 duced, narrowed in front. 



Hub. Singapore. 



Unfortunately we only possess a single very imperfect specimen of 

 this very interesting Tortoise, wanting several of the discal shields. 



2. Emys laticeps. 



Shell pale olive, yellowish beneath ; sides rounded, hinder lateral 

 margin rather expanded and recurved, hinder end rather compressed 

 above ; shields thin, transparent, inferior plates with a narrow black 

 edge ; head large, short, broad, covered with a smooth skin ; neck 

 with very narrow yellow lines. 



Hab. West Africa, River Gambia (M. Castang). 



This is the only Emys yet found in West Africa, and is easily 

 known by its short broad head. 



Fam. 2. Chelydid^. 



3. Hydromedusa subdepressa. 



Shell oblong, depressed, dark brown, entire, rounded in front, 

 rather angular behind ; nuchal plate short, broader than the post- 

 vertebral ; .post-vertebral square, as long as broad, vnth the front 

 angles produced ; sternum pale brown ; gular plates short, unequal ; 

 head grey ; lips and beneath white ; neck with small conical warts. 



Hab. Brazils. 



There is in the British Museum collection a single adult specimen 

 of this species, which has some of the plates of the back and ster- 

 num divided into a number of small roundish shields. 



The specimen was sent from Brazil to Mr. Brandt of Hamburg, 

 who transmitted it to the Museum. It may be only a variety of 

 H. fimilabris, but the nuchal and post-vertebral shields are very 

 differently shaped. 



4. Hydraspis Spixii, Gray, Cat. Kept. B. M. 30. 



Shell oblong, depressed ; middle of the back flat ; marginal shields 

 very broad in front, narrow and bent up on the sides, broader and 

 arched over the hind legs ; the post-vertebral shield large, as wide as 

 long ; third and fourth narrow, longer than broad ; the fourth and 

 fifth with an acute keel on the hinder edge ; sternum rather broad ; 

 head very large, crown and temples covered with small shields ; ears 

 prominent ; neck smooth ; lower part of the outer edge of the hind 

 leg with four larger plates, the last compressed and largest. 



Hab. Brazils, Para. 



There is an adult stuffed specimen, and a skeleton of nearly the 

 same size, of this species in the British Museum collection. 



This species is very like H. gibba, but the back is more depressed, 



