190 DEEP-SEA FISHES OF THE ATLANTIC BASIN. 



3J times iu the length of the head. The scales are very small (mnch more so than in //. 

 mediterraneun), the diameter of the scales of the body being one-.seveuth that of the scales 

 of the lateral line; they are nearly circular, and have a few little s^jines. Ventral keel in- 

 distinct. Dorsal and anal spines feeble. Ventrals extending scarcely to the vent. 



Eadial formula: B. vi, 17; l\ i, 17; V. i, 0; A. ii, 11; 0. Vii, 18, 8. 



This species is distinguished from H. mediterraneus by the relatively smaller size of its 

 eyes and scales, by the indistinct ventral cuirass, and by the greater number of rays in the 

 fins. The tyi)e was a single specimen taken off Flores iu the Azores, J uly 30, 1888, by the 

 steam yacht Hirondelle at a depth of 1,557 meters. 



Family BATHYCLUPEID.^. 



Bathyclupeidce, Gill, MS. 



Acanthopterygians with a pneumatic duct to air-bladder, ventradiform body, cycloid 

 scales, straightish lateral line, flatfish excavated crown, long intermaxillaries extending as 

 far back as the supramaxillaries; short postmedian dorsal without spines; long anal with 

 one spine, and small, subjugular ventrals with a spine and five rays each. 



This family shares with Berycoideans a persistent pneumatic duct. (Gill.) 



BATHYCLUPEA, Alcock. 



Bathyclupm, Alcock, Ann. and Mag. Nat. Hist., viii, 1891, 130. 



Acanthopterygians with compressed head and body; head with large mucous cavities: 

 lower jaw prominent. Teeth on jaws, palatines and vomer, small, villiform. Gill-openings 

 large. Branch iostegals 7. Pseudobrauchia' present, large. Scales cycloid, deciduous. 

 Lateral line distinct, nearly straight. Dorsal fin postmedian, with one or two spines and 

 eight or ten rays. Pectorals large, pointed, the upper rays the longest. Ventrals subjugu- 

 lar, small. Caudal furcate. 



The type, B. Hoskynii, Alcock {loc. cit., fig. 4) was obtained from the Andaman Sea by 

 the Investigator at station 115, depth 188-220 fathoms, the largest of the four specimens 

 obtained being 8 inches in length. 



BATHYCLUPEA ARGENTEA, Goode & Bean, n. s. (Figure 415.) 



Head ana body compressed ; the body covered with large, cycloid, deciduous scales. 

 Height of body at vent less than length of head, equal to distance from posterior margin of 

 orbit to end of lower jaw. Length of head contained in that of body (without caudal) 3 

 times. Diameter of orbit 2~ times in length of head, and slightly greater than the distance 

 from its anterior margin to the tip of the lower jaw, the length of the snout being about 

 two-thirds the diameter of the orbit, and twice the width of the interorbital space. Mouth 

 subvertical, the length of the upper jaw slightly exceeding the diameter of the orbit. Teeth in 

 villiform bands on jaws, palatines and vomer. The dorsal fin placed at a distance from the 

 tip of the snout equal to twice the height of the body; its first ray inserted in the vertical 

 from the base of the seventh anal ray. Pectoral slender, its upper rays the longest, extend- 

 ing considerably beyond the origin of the anal. Ventrals small, fan-shaped, inserted almost 

 under the posterior margin of the orbit. Color, yellowish silvery. 



Eadial formula: D. 9; A. 30; V. 6; L. lat. 3.5. 



The type is a specimen, 13 inches in length, obtained by the Blalce at station xxxvii, 

 off Neris, at a depth of 365 fathoms. 



Family ANOMALOPID^^. 

 Anomalopida;, Gill, MS. 



Acanthopterygians with a compressed oblong body covered with small spinigerous 

 scales; continuous lateral line lu'ar back; scaleless head, with sculiitured tubifeious roof 

 and infraorbital glands; nostrils large, not separated from the eyes by osseous inter- 



