202 
Mr. A. Alcock on the Bathylnal Fishes 
was soft and almost coriaceous, and measured a quarter of an 
inch in its major diameter. The pectoral fins reach to the 
eighth anal ray. 
Family Carangidse. 
Bathyseriola, gen. nov. 
Body oblong and compressed, covered with small deciduous 
cycloid scales. Lateral line apparently unarmed. First 
dorsal fin continuous, with rather feeble spines ; the second 
and the anal much more developed and without finlets. Anal 
spines approximated to and continuous with the rest of the 
fin. Ventral with a continuous membranous attachment to 
the abdomen. Cleft of mouth narrow ; villiform teeth in the 
jaws only. Preopercular border entire. Seven branchio- 
stegals. Pseudobranchiae. Pyloric appendages numerous. 
No air-bladder. Vertebrae 10/14. 
5. Bathyseriola cyanea y sp. n. 
All the tissues fragile. 
B. 7. D. 8-9/24-25. A. 3/22. P. 22. V. 1/5. 
Body oblong and compressed ; its height about 3^ in the 
total and one ninth less than the length of the head. 
Head compressed and thin in its lower, broad and heavy in 
its upper half ; its muciferous cavities well developed. Snout 
rounded, a little inflated at the tip, the jaws equal in front ; 
its length, which is hardly equal to its greatest breadth, is 
equal to the diameter of the eye. Eyes circular, their dia- 
meter not quite one fourth of the length of the head ; they are 
encircled by a sharp-edged adipose fold, widest fore and aft ; 
interorbital space wider than the eye, convex from side to side. 
Nostrils large, situated almost superiorly at the tip of the 
snout. Cleft of mouth narrow, the maxillary hardly reaching 
the vertical through the middle of the eye; jaw-bones weak, 
with a trenchant edge, which bears a narrow band of villiform 
teeth ; tongue large and fleshy ; buccal folds very broad. 
Gill- cleft wide ; gill-membranes united anteriorly ; gill-covers 
with thin, almost membranous, bones, the operculum with 
two diverging weak stays above, the preoperculum bulging 
backwards as a large, striated, entire lobe ; gill-laminae 
broad, gill-rakers on the first arch long, close-set, acute ; 
pseudobranchiae fleshy. The mucosa of the whole oro-branchial 
cavity black. 
