16. SOXALIA. 33 



3. Sotalia gadamu. 



Delphinus (Steno) gadamu, Owen, Tr. Z. S. vi. p. 17, pi. iii. figs. 1 >.t 2, 

 pi. iv. tigs. 1— V. 



The three specimens placed provisionally under this name, though 

 otherwise mm-h alike, exhibit a gradual transition in the characters 

 of the pterygoid hones, which in the last closely resemble those of 

 the ordinary Dolphins (Dclphiniis and Frodeljjhinus), not showing 

 that separation in the middle line characteristic of the well-marked 

 members of the genus Sotalia. It becomes a question to be resolved 

 by the acquisition of further materials, whether this may be a 

 change due to age, or whether it is of specific importance. 



a. Skull; mutilated behind. (1477 « — GO. 2. 5. 3.) 



Yizagapatam. Sir "Walter Elliot, K.C.S.I. [P.]. 



T3'pe of species. 



b. Stuffed specimen ; and skull taken from it. (82. 1. 2. 3.) 



Karachi. Karachi Museum, 1882 [E.] 



c. Stuffed specimen ; young ; and skull taken from the same. 



(b3. 11. 20. 3.) 

 Secretary of State for Indist [P.]. 

 Exhibited in the Indian Section, International Fisheries Exhi- 

 bition, London, 1SS3. 



A. Sotalia lentiginosa. 



Delphinus (Steno?) lentiginosus, Owen, Tr. Z. S. vi. p. 20, pi. v. 

 figs. 2 & 3. 



a. Skull. (1476 a--66. 2. 5. 2.) 



Yizagapatam. Sir AValter Elliot, K.C.S.I. [P.]. 



Type of species. It differs very little from the last. 



