144 
Memçiys of the Indian Museum. 
[ VoL. II, 
proportions of eye and spiracle it differs from the others, which resemble one another 
in this respect. All three specimens are of the same colour and have the same char- 
acteristic ocellus at the base of the pectoral fin. 
The shape of the teeth is alike in the three specimens ; the same may be said of 
the form and disposition of the dorsal and caudal fins. 
Fig. I. — Mouths of : A. = R. powelli\ B. = Artfrt sp. ; C. = R. philipi. 
Family TORPEDINIDÆ:. 
Narcine mollis, Lloyd. 
Lloyd, Rec. Ind. Mus., vol. i, p. 8 (1907); Annandale, Mem. Ind. Mus., vol. ii, no. i, 
p. 43, pi. iik, figs. 3, 3«. 
Illustr. Zool. “ Investigator Fishes, pi. xlvi, figs, i, la (1909). 
The vent is slightly nearer the anterior margin of the snout than the tip of the 
tail. The disk is evenl}'- rounded, it is slightly broader than long. The margin of the 
flap formed by the confluent nasal valves is most prominent at the sides, unlike 
N . timlei, the other Indian species. The whole quadrangular space which lies between 
the two nasal clefts is nearly as long as it is broad. In N . timlei this space is three 
times as broad as it is long. 
The anterior dorsal is slightly smaller than the posterior ; it commences j ust 
behind the ventrals. The dorsal and caudal fins have blunt pointed ends and the 
folds of skin along the sides of the tail are obvious, but not prominent. The dorsal 
and ventral parts of the* caudal fin are confluent. 
The teeth are in 10 to 12 rows in both jaws ; the front row has only 3 4 teeth ; 
behind this the number gradually increases in succeeding rows up to about 16. The 
teeth of the front row^s have triangular, flat surfaces ; behind, the teeth bear a sharp 
median cusp. 
The spiracle is immediately behind the eye and is the same size as the eye. 
The electric organs seem well developed. The fish gave no perceptible shock to 
the hand and died soon after capture. 
Round the margin of the disk, and along the sides of the tail, and over the snout, 
are the openings of mucous pores symmetrically arranged. 
