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 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 inches long and are separated by a tongue-shaped projection of 
the border, which constitutes a smaller fifth horn. 
Raia philipi, Rloyd. 
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 3§ 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 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. 
