308 THE PLAGIOSTOMIA. 



depressed, with a low fold on each side from opposite the second dorsal. Caudal 

 deeper than long, rounded, hind margin slightly convex. 



Rusty brown, with spots varying from lighter brown to white, and from 

 larger than the spiracle to minute dots, so closely placed that the brown appears 

 as narrow streaks, reticulations, bars, and spots. Lower surfaces white, except 

 the edges, which are mottled and spotted with white and brown. Hinder 

 margins of dorsals and caudal light. 



Total length of specimen described 10j, length of disk 6, length of body 

 cavity 6| and width of disk 6 inches. 



In the type the number of rows of teeth are said to be If which is probably 

 abnormal. 



Red Sea. 



Narcacion suessi. 



Torpedo suessi Steindachner, 1898, Sitzb. Akad. wiss. Wien., 107, p. 784, pi. 2. 



Disk subcircular; snout slightly convex. Spiracles fringed; papillae five 

 or more, irregular, hindmost one largest. Tail shorter than the body; cam hi I 

 angles rounded, margins convex; folds originating opposite the second dorsal. 

 Dorsals rounded; first dorsal not twice as large as the second, origin above the 

 vent, end of base in front of the ends of the bases of the ventrals; origin of 

 second dorsal in front of the free ends of the ventral fins. 



Brownish, mottled anteriorly, with large spots of blackish edged with white, 

 eight or more on the disk and one on the base of each of the dorsals and the 

 ventrals. Spots varying in diameter from the width of the mouth to very small 

 dots. 



Perim and Mocha, Red Sea. 



Closely allied to if not identical with N. panthera. 



Narcacion fuscomaculatus. 



Torpedo fuscomaculatus Peters, 1855, Monatsb. Bed. akad., p. 466; Gunth., 1S70, Cat. fishes Brit. 



mus., 8, p. 151. 

 Narcacion pollcni Bleeker, 1866, Nat. tijds. Ned. Ind., 3, p. 171; 1874, Faune Madagascar, p. 1, pi. 1. 

 Torpedo panthera Klunzinger, 1S71, Syn. fische, 2, p. 238. 



Disk broader than long. Snout subtruncate. Mouth wide, with a longi- 

 tudinal fold at each angle. Teeth small, broad-based, sharp-cusped, in ft rows 

 on an eighteen inch specimen, while an eight inch individual apparently of the 

 same species has % rows. Eye small, about twice the length of the orbit from 

 the spiracle. Spiracles larger than the eye; fringes small, four on the inner 



