160 Miscellaneous. 



on the species of Steimothceri then in the British Museum, and I 

 divided them into sections or subgenera. In that paper I took no 

 notice of Sternothcerus Adansonii, as that species was only described 

 from a shell in the Paris Museum, said to have come from the Cape 

 de Verd Islands, which had been noticed by Schweigger under the 

 name of Emys Adansonii. 



We have just received, through Mr. Dalton, two specimens of a 

 species of the genus from the west coast of Africa, which is very 

 distinct from any of the others, and, I have little doubt, is identical 

 with the shell in the Paris Museum. As it is in a perfect state and 

 well preserved, I think it well to give a new description of it. 



It belongs to the subgenus Notoa, the head being short, and the 

 temples covered with a large triangular space of small polygonal 

 shields. 



The hinder part of the sternum of the animal is narrower, and 

 more like that of the genus Pelomedusa than any of the other species 

 of the genus Sternothcerus ; but the front lobe is distinctly moveable, 

 and united by a straight suture. 



Sternothcerus Adansonii. 



Shell oblong ovate, depressed, rather wider behind than in front ; 

 dark olive, with very close, regular, uniform radiating black lines, 

 sometimes broken up into small dark spots ; sternum and under- 

 sides of the margin yellow ; the areola of the sternal plate square, 

 blackish. 



The head depressed, with very close, nearly uniform, unequal 

 black lines ; the frontal plate very large, with a triangular patch of 

 small scales on the temple, reaching to over the front edge of the 

 ears ; the lips white ; the throat pale ; the feet olive above, pale 

 beneath ; claws 5/5, olive, with a yellow streak in the middle of the 

 upper surface. 



The first vertebral plate much longer than wide, narrow behind, 

 with a blunt keel ending in a rounded tubercle behind. The second, 

 third, and fourth vertebrae about as wide as long, with a sharp keel, 

 ending in an acute tubercle near the hinder edge of each shield ; the 

 fifth vertebra like the first, but only very slightly keeled. The 

 front marginal plate wide, those over the hinder legs rather wider, 

 and those on the sides of the shell very narrow. The gular plate 

 small, triangular ; the intergular one lozenge-shaped, narrowed in 

 front ; the pectoral plates narrowed and truncated at the inner edges. 



Hab. West coast of Africa (Dalton). 



The species of this genus seem to have a confined range. Thus 

 there are two species of the first subgenus (Tanoa) — one from S. 

 Africa and Natal, and the other from Western Africa ; in the same 

 manner there are two species of the second subgenus (Notoa) — one 

 from Madagascar and the other from the West African coast. Thus, 



1. Tanoa. 2. Notoa. 



S. sinuatus S. and E. Africa S. subniger. 



S. Berbianus West Africa S. Adansonii. 



Proc. Zgol. Soc, June 28, 1864. 



