312 THE PLAGIOSTOMIA. 



Torpedo chilensis Guichenot 1848, Fauna Chilena, 2, p. 368, is insufficiently 

 described: — "Torpedo corpore omnino rotundato, fusco-nigricante. La forma 

 de esta especie es perfectamente redondeada. — Color: moreno rojizo, tirando 

 algo al de ladiillo, pero mas oscuro. — Longitud total, nuestro dibujo la representa 

 de 2 pies; su mayor anchura es de 10 d 11 puig.; sin embargo, suele ser mucho 

 mayor." 



Narcacion tokionis. 



Tetronarcine tokionis Tanaka, 1908, Journ. Coll. sci., Tokyo, 23, p. 2. 



This species appears to be shaped much like N. californicus but somewhat 

 narrower in disk and longer in the tail. The hind margin of the caudal is in- 

 dented; the first dorsal is more than twice as large as the second and has less 

 than half of its base above the ventral bases. 



Uniform brown above; whitish beneath. 



Sagami Sea, Japan. 



Narke. 



Narke Kaup, 1826, Arch. anat. phys., p. 365; 1836, Thierreich, 3, p. 113. 

 Astrape Muller & Henle, 1837, Sitzb. Akad. wiss. Berlin, p. 117. 

 Bengalichthys Annandale, 1909, Mem. Ind. mus., 2, p. 46. 



Head, body, electric organs, and pectorals united in a subcircular disk. 

 Anterior narial valves confluent in a quadrangular flap, free behind, covering 

 the mouth. Mouth small, protractile, surrounded by a fold. Teeth small, in 

 narrow bands. Eyes small, protruding. Spiracles larger than the eyes, imme- 

 diately behind the orbits, with smooth, raised edges. Gill openings narrow. 

 Ventrals broad, distinct, inserted below the pectorals. One dorsal. Tail short, 

 with a fold at each side; caudal resembling that of Rhinobatus, supracaudal 

 longer. Skin soft, smooth, naked. 



Base of dorsal above the ventrals 



vent behind the middle of total length . . capensis (page 313) 

 Base of dorsal behind the ventrals 



vent near the middle of the total length 



ventrals with an outer angle, margin excavated 



brown above, with white spots and edges, white beneath 



dipterygia (page 313) 

 ventrals lacking outer angle, margin rounded 



brown above and beneath, plain or spotted with black and white 



japonica (page 314) 



