GO On two undescribed species of Skate, or Rut dee. 



Ehrenb.), inhabits India. Rnssel describes ten species, of 

 which we have three in Bengal, namely, the Tenkee kttnsul, 

 Russ. Isacurra tenlcee, id. and the Wolga tenkee, id. The 

 following are two additional species to the three we have 

 just mentioned, which all belong to Bengal. 



Myliobatis Dumer. 



Mylio. Macroptera, J. M. t. 11. f. 1. 



A Myliobatis with an elongated depressed oval snout; the 

 breadth of the body and pectorals equal to twice its length, and 

 the length of the ventral fins at either side of the insertion of 

 the tail equal to a third length of the body. Tail equal in length 

 to twice the breadth of the body and pectorals. Dorsal placed 

 at the base of the tail, and in front of a narrow pointed sting. 



Trygon Adans. 



Trygon Varieg-atus, J. M. t. 11. f. 2. 



A Trygon with the upper surface of the body variegated like 

 tortoise-shell, and covered with osseous tubercles, with one large 

 tubercle on the back, and a serrated sting on the upper third of 

 the tail ; the tail is slender, without a fin, and equal to thrice the 

 length of the body. Its breadth is about twenty inches. This is 

 a very beautiful species, and is found in the Salt-Water Lake near 

 Calcutta. 



The first belongs to the singular group of Skates called 

 Sea-Eagles, and is a good deal like the figure given in 

 Hardwicke's Illustrations of Indian Zoology as Myliobatis 

 maculatas, but the dorsal and ventral fins which are placed 

 at the base of the tail are short and rounded, while in the 

 species here described they are longer and angular. 



The second is a very beautiful Trygon, or Sting-ray, of 

 which we can find no account in authors, we have therefore 

 described it as a new species. 



Description of Plate. II. 



Fig. 1. — Myliobatis Macroptera ; 1. a. Lower part of the head ; 



1 . b. lower view of the ventrals and base of the tail. 

 Fig. 2. — 2, a front view of the head, shewing the altitude and 



breadth of the body ; 2. b. lower part of the head ; 2. c. lower 



part of the body ; 2. d. the osseous tubercles on the centre of the 



back, natural size. 



