Indian Deep-sea Dredging. 127 



7*5 millim. in its vertical and about 2*5 millim. in its antero- 

 posterior diameter; one from the middle of the tail measures 

 about 6*25 millim. in its vertical and not quite 2 millim. in its 

 antero-posterior diameter. 



GONOSTOMA, Rafinesque, 

 38. Gonostoma elongatuni, Gtlir. 



Oonostoma elongatum, Giinther, 'Challenger' Deep-sea FLslies, p. 17o, 

 pi. xlv. fig. B. 



One fine mature male was taken at Station 107, in 738 

 fathoms. It measures 7" 75 inches in length. It has the 

 formula 



D. 13. A. 30. P. 12. V. 8. 



There are no scales, and the fish in the fresh state is uniformly 

 enveloped in thick tenacious mucus. In addition to the 

 luminous organs described by Dr. Giinther there is an 

 elliptical organ of moderate size in the middle of the posterior 

 border of the preoperculum on each side, and one of similar 

 shape and size on each side of the mandibular sjmpiijsis. 

 There are six large pyloric ceeca. 



Colours in the fresh state : — Jet-black ; luminous organs 

 bright rose-pink, with silvery margins. 



Chauliodus, B1. Schn. 

 39. Chauliodus Sloanii, Bl. Schn. 



Fine specimens of this well-known bathybial, or nocturnal 

 pelagic, type were taken in the Laccadive Sea, the Andaman 

 Sea, and the Bay of Bengal. One specimen taken at Station 

 109, 738 fathoms, was a mature female with the enlarged 

 ovaries extending on each side along the entire length of the 

 abdominal cavity, the ova being smallish (a little over half a 

 millimetre in diameter) and very numerous. 



The stomach of this specimen was deeply siphonal, the 

 CEecal prolongation extending more than one third the length 

 of the body-cavity. There were three moderate-sized pyloric 

 caeca. 



Family Scopelidse. 



Harpodon, Le Suer. 



40. Harpodon squamosuSj sp. n. 



B. 17. D. 12-U. A. 13-15. P. 10. V. 9. 



Tissues extremely delicate ; the paired fins long, fcatliery, 

 fragile. 



