REPORT ON THE DEEP-SEA EISHES, 179 



Not one of the specimens which I received from the Colonial Museum at Wellington 

 is in a tolerable state of preservation, so that I am not certain whether the following 

 list of luminous organs is exhaustive. There is one organ placed at the base of each 

 branchiostegal ray ; a series of seven larger ones runs along each side of the isthmus 

 and is continued as an abdominal series which consists of seventeen organs to the ventral 

 tin, and of as many from the ventral to the anal ; seventeen may also be counted along 

 the base of the anal to the caudal. As in Gonostoma a second series, situated higher up 

 the sides, accompanies this series on the trunk. A single luminous organ is situated in 

 front of the eye and covered by the prseorbital, and another under the transparent sub- 

 operculum. To judge from outward appearance, all these organs seem to possess the 

 same structure and to differ only in size. 



This fish exceeds the allied forms in size, one of the specimens being 12 inches long. 



According to Hutton, the specimens were found in Cook's Strait, thrown ashore 

 after severe gales. 



Chauliodus, Bl. Schn. 



Chauliodus sloanii, Bl. Schn. 



The following specimens of this well-known bathybial genus were obtained by the 

 Challenger. Previously it was known from the Mediterranean and Atlantic only. 



Habitat. — South of New Guinea, Station 191 ; depth, 800 fathoms. One specimen, 

 8f inches long. 



North of New Guinea, Station 216a ; depth, 2000 fathoms. One specimen, 2f inches 



long. 



South of Japan, Station 235 ; depth, 565 fathoms. One specimen, 5| inches 



long. 



Mid-Atlantic, Station 104; depth, 2500 fathoms. One specimen, 7^ inches 

 long. 



North-east of Bermuda, Station 60; depth, 2575 fathoms. One specimen, 3 inches 



long. 



* Family Scopelid^. 



Sawus, C. V. 



Besides the species mentioned here, probably others descend to similarly moderate 

 depths, as, for instance, Saurus atlanticus, Saurus intermedius, &e. 



