TEMERA. 315 



small spots of white sprinkled over the ventral surfaces. A frequent marking 

 is white below the anterior ray of each ventral fin. Young at the time of extru- 

 sion are nearly uniform, lighter than the adults; they have only the white marks 

 on the first rays of the ventrals. The specimen figured on Plate 24, from the 

 Sagami Sea, differs from most of the others in having black spots on the back 

 and on the lower surfaces. 



Specimens described from the Sagami Sea, Japan. 



Nakke impennis. 



Bengalichthys impennis Annandale, 1909, Mem. Ind. mus., 2, p. 48, f . 9, pi. 3", f. 7. 



Disk stout, thick, broader forward, length and width about equal, broadly 

 rounded in front. Eyes minute, sunken. Spiracles close to the eyes, edges 

 smooth. Mouth closely resembling that of N. dipterygia externally; teeth 

 with the triangular transverse ridge somewhat more pointed than in that species. 

 A somewhat narrow long rectangular process on the roof of the mouth, directed 

 backwards rather than downwards, sinuous on the distal edge; a smaller similar 

 process on the floor of the mouth. Numerous white glandular pits on the back. 

 Pectoral fins a fringed ridge 2-3 mm. broad near the edge of the disk in the 

 posterior half. Tail stout, longer than the disk; caudal angles rounded. Dorsal 

 small, behind the ventrals, near midway to the caudal. Claspers slender, 

 blunt, reaching to origin of dorsal. 



Top of disk and tail deep buff clouded with dark brown; lower surface, 

 edges of disk and fins, a large spot behind each battery, another in front of each 

 ventral, and the more elongate blotch behind each ventral and at each side of 

 the base of the caudal cream color. 



Length of one of the two types 175 mm., length of disk 81, length of tail 89, 

 greatest width 79, thickness 25, and height or length of dorsal fin 7 mm. 



Coast of Orissa, Bay of Bengal. 



Temera. 



Temera Gray, 1831, Zool. misc., 1, p. 7. 



Disk subcircular, broader than long, longer than the tail. Nasal valves 

 short, confluent, reaching the mouth. Mouth small, protractile; teeth in bands. 

 Eye small. Spiracle moderate, close to the eye, not fringed. Ventrals broad, 

 elongate. No dorsal fin. Tail short. An electric organ between the head and 

 the pectoral. Nearly alUed to Narke. 



