REPORT ON THE DEEP-SEA FISHES. 183 



strong, broad, horizontal, as in bottom fish generally ; it is inserted so that its inner ray- 

 corresponds to the anterior dorsal ray. 



Scales rather small and cj^cloid ; there are about ten series between the origin of the 

 dorsal fin and the lateral line, and about eight between the lateral line and the anal. 

 The lateral line is broad and very distinctly marked ; its scales correspond only to about 

 every second transverse series ; they have their hind margin raised and free, and two 

 small but distinct pores open above and below each scale. 



Colour brownish, lower parts of the head and abdomen black ; buccal and branchial 

 cavities black. A stripe between each pair of dorsal rays ; the membrane between the 

 three middle caudal rays, the anal fin, the outer (respectively lower) sides of the pectoral 

 and ventral fins blackish. 



The oesophagus passes into a long and wide csecal sac, which, however, does not reach 

 backwards to the middle of the length of the abdominal cavity. The pylorus is on the 

 same level as the cardiac end of the stomach ; two short and wide pyloric appendages 

 are placed opposite to each other. The intestine runs straight backwards without any 

 lateral bend, and is separated from the short rectum by a circular fold, the course of which 

 is also visible externally. The mucous membrane of the intestine is densely and deeply 

 folded, the folds being raised in a reticulated fashion. The liver consists of a right and a 

 left lobe, connected by a thin transverse bridge. The left lobe is broad and flat, 

 extending somewhat further backwards than the stomach. The right lobe is far more 

 bulky, extending nearly to the end of the abdominal cavity, and hollowed out on one side 

 for the reception of the intestinal tract. This lobe is connected with the transverse 

 portion of the liver by a long and thin strip of the substance of the liver. Gall-bladder 

 of moderate size. Air-bladder absent. 



The ovaries are closed cylindrical sacs, and attached to each other along their whole 

 length ; they did not contain ova. 



Bathysaurus agassizii, Goode and Bean,^ described from a specimen 21 inches long, 

 and obtained at a depth of 647 fathoms in the Atlantic, lat. 33° 35' N., long. 76° 0' W., 

 is probably not specifically distinct from the Pacific specimen. It seems to be a fish with 

 a somewhat deeper body, but, then, it was ascertained to be a " female, full of nearly 

 mature eggs." 



Bathysaurus mollis (PI. XLVI. figs. B, B'). 



Bathysaurus mollis, Giinth., Ann. and Mag. Nat. Hist., 1878, vol. ii. p. 182. 

 D. 15. A. 11. P. 15. V. 8. 

 Adipose fin present. Rays of the fins, especially the front rays of the dorsal, rather 

 elongate. 



" Bull Mus. Comp. Zo6L, vol. x., 1883, p. 215. 



