142 Memoirs of the Indian Museum. [Vol.. II, 



The most characteristic features of this species are the soft, flabby consistency in 

 the fresh state and the remarkable coloration, which suggested the name R. reversa. 

 Registered No. F ^^^^ 



In the same haul was obtained a black pillow-shaped egg with four hollow horns 

 at the corners; this measures 2^ by i| inches. The horns are not equal in length : 

 those of one pair are 2^ inches long and are separated by a straight border ; those of 

 the other pair are ij inches long and are separated by a tongue-shaped projection of 

 the border, which constitutes a smaller fifth horn. 



Raia philipi, I^loyd. 



Ann. Mag. Nat. Hist. (7), vol. xviii, p. 309 (1906) ; Illustr. Zool. " Investigator," 

 Fishes, pis. xl and xli (1908). 



The greatest breadth of the disk is equal to the greatest length, including the 

 ventral fins. 



The ends of the snout and tail are equidistant from the cloacal orifice. The 

 snout is slender and prominent. The interorbital space is 3f in the length of the 

 snout, measured from an eye or the middle of the mouth. 



The anterior borders of the pectoral fins, which are somewhat sinuous, together 

 form an angle of about 85°. 



The lateral angles are rounded. The spiracle is large, its greatest diameter 

 equals that of the eye. 



Numerous small spinules occur on the upper surface of the tip of the snout and 

 close to the antero- lateral margin in its posterior half only. 



The superciliary ridge bears four spines in front and three behind. 



There are five mid-dorsal spines in the branchial region. 



Between the ocellus and the margin of the pectoral fin is a group of lanceolate 

 denticles pointing inwards (probably characteristic of the male). 



The whole lower surface of the snout is covered with fine denticles. 



On the dorsum of the tail are three somewhat irregular rows of spines. The tail 

 is naked below, the sides of the tail are spiny. 



The mouth is widely but distinctly V-shaped ; in width it is i| in the length of 

 the snout. 



There are eighty rows of teeth in the upper jaw and sixty in the lower. Teeth 

 low and triangular, on a rhomboidal base. 



The edges of the nasal valves are deeply fimbriated and are united across the 

 middle line by a distinct fold of skin, which is separated from the upper jaw by a deep 

 curved groove. 



The dorsal fins are equal in length ; the distance between them is greater than the 

 length of either. Caudal fin small. 



Colour uniform brown above, with a dark ocellus at the base of each pectoral fin, 

 surrounded by a paler ring. Uniform white below ; the tail shows dark mottling on its 

 lower surface. 



