380 Mr. A. Aleock on the Bathybial Fishes 
BATOIDEIL. 
Family Rajide. 
Raga, Cuv. 
Raja mamitlidens, sp. n. 
All the tissues fragile. Snout short. Disk, including the 
ventrals, half the total length, its breadth the same; in shape 
subquadrangular, with rounded pectoral angles and snout ; 
the whole of its upper surface, including eye-covers and fins, 
densely covered with acuminate granules. The tail similarly 
covered, on its upper surface and sides in the anterior half, 
everywhere, including the dorsal and rudimentary caudal fins, 
in its posterior half. Large recurved spines, one above each 
angle of each orbit, one inside each inner spiracular angle, one 
or two on each shoulder-girdle, and thirty in a row down the 
middle dorsal line as far as the first dorsal fin. Under sur- 
face of disk, ventrals, and anterior half of tail perfectly smooth. 
Width of the interorbital space equal to the length of the 
orbit and nearly twice the major diameter of the spiracle. 
Interval between the outer edges of the nostrils greater than 
the interval between the nostrils and the tip of the snout. 
Mouth crescentic. Teeth ina pavement, showing twenty-four 
oblique rows in the upper and eighteen in the lower jaw; 
each tooth with a broad globular base and a gently pointed 
mamillary summit. Dorsal fins adjacent but separate. 
Colour “uniform jet-black throughout” (Prof. Wood- 
Mason). 
One female specimen, 114 inches long. - 
Hab. Gulf of Manaar, lat. 6° 29’ N., long. 79° 34’ E., 
597 fathoms. 
ACANTHOPTERYGII. 
Family Berycide. 
TRACHICHTHYS, Shaw. 
Trachichthys intermedius, Hector. 
Trachichthys intermedius, Hector, Tr. New-Zealand Inst. vol. vii. 
p. 245, pl. xi. fig. 18 a; Giinther, Zool. ‘Challenger’ Exp. vol. xxii. 
p. 24, pl. v. fig. D. 
One specimen, from the Bay of Bengal, lat. 19° 35’ N., 
long. 92° 24’ I8., 272 fathoms ; bottom-temperature 50° Fahr. 
