194 



MESSES. E. W. L. HOLT AND L. W. ETENE — BISCAY AN PLANKTON 



Smaller larvye, under 3 mm. long, possibly referable to this genus, were taken in 7 

 other hauls, in none of which the net descended below 100 fathoms. 



The area fished by the ' Research ' is well within the known horizontal range of this 

 genus, whose members are probably denizens of the surface-waters of the deep sea 

 at all stages. 



GOXOSTOMATIN.E. 



Maurolicus BOREALis, Nilsson. (Fig. 1.) 



Fig. 1. 



^mifjjm 



Maurolicus borealis larva 10 mm. long. Diagrammatic camera hicida sketch, x 10-5 ca. 



Larvae referred by us to this species occurred as follows ;- 



32 «. 



36 6. 

 36 6-. 



Three, 8-10 mm. 

 Two, 12-14 mm. 

 Four, 3-9 mm. 



It is remarkable that all these captures were made between 11.0 p.m. and 2.0 a.m. 



Other larvae, which may belong to this genus (and, presumably, species), but cannot, 

 ow ing to their condition, be referred to it with reasonable certainty, were taken in ten 

 other hauls between 100 to 25 fathoms and the surface, of which three were daylight 

 hauls. 



The area fished is well within the know^n horizontal range of the species. Of its 

 vertical range we have not very much definite information, but suspect that such 

 specimens as we have obtained from comparatively shallow water (about 110-180 

 fathoms) off the Irish coast were taken nearer to the bottom than to the surface. 



GoNOSTOMA BATHYPHiLUM (VaiUant). 

 Twice captured : — 



30 a. One of 85 mm. (without caudal). | 30 i. One of 110 mm. (without caudal). 



This species is already known from both north and south of the area fished by the 

 ' Research.' We get it occasionally in Irish collections, but not under circumstances 

 which indicate a much nearer approach to the surface than that shown above, while 

 earlier records all deal with captures made in nets sunk to over 1000 fathoms. 



GoNOSTOMA MiCRODON, Giintber. 

 Once recognized in haul : 



36 h. 250-0 faths., 10 a.m. One of about 18 mm. 



