126 



Proceedings of the Royal Irish Acadevnj. 



Only one spinous ray could be seen in the first dorsal, a slender spine, 

 less than half as long as the following- ray. 



Colour not noted when alive, probably as in 7'. irachijrhynchus. 

 Measurements of Ilelga specimens : — 



(a) 



(&) 





Clli. 



cm . 



Total length, 



23-3 



25 







Length of head, 



6-3 



6 



8 



Length of snout. 



2-6 



2 



7 



Diameter of eye, vertical. 



1-2 



1 



3 



Diameter of eye, horizontal, 



1-8 



2 







Inter-orbital space (least), 



1-5 



1 



65 



Width of head, 



3-2 



3 



4 



Snout to 1st dorsal, ... 



6-7 



7 



2 



Snout to vent, 



9-4 



9 



7 



Snout to front of mouth, 



2-2 





4 



The somewhat brief description of this species given in the Challenger 

 reports has been supplemented by Oollett in his account of the fisiies taken 

 by the Elichael Scots. The measurements from the Melga specimens, taken in 

 conjunction witli those which he records, indicate a gradual increase in the 

 size of the eye relative to the length of the head, and a constant length of 

 snout, forty to forty-one per cent, of the total length of head, The other 

 dimensions given, which involve distances between fixed points on the head 

 and body, show a variation of about one-tenth of their length, irrespective of 

 the size of tlie individuals. 



General Dislribiiiion. — Previous reconls of T. Murrayi have been from the 

 neighbourhood of the Faeroe Bank {Michael Sars and Knight Errant) and 

 ■ Iceland {Ingolf), with a bottom temperature recorded as 5'5 to 8'07. 



-Irish Distribution.— Helga.—H.Ji.. 363.— 10 viii '06—51" 22' N., 12'' 00' W., 

 698-720 fathoms, ooze. Trawl — seven, 16-35 cms. 



The jDresent record indicates a considerable extension southwards of its 

 range at an increased depth but similar temperature. Though no bottom 

 temperature was recorded at the time of capture, pliysical investigations in 

 the neighbourliood indicate that the bottom temperatlire at 700 fathoms 

 would have been below 7-5°. A reading taken shortly afterwards at 600 

 fathoms, over a depth of 620 fathoms, gave 7-92° ; and a reading taken three 

 months earlier close to the same position at 700 fathoms, over a depth of 720 

 fathoms, gave 6'84°, • 



