1912. | R. B.S. SEWELL: Notes on deep-sea fish. 13 
has shown that as. regards the vomerine teeth, the number present 
in U. lepturus may vary from I—3. Alcock’s specimens all possess 
two which vary very considerably both in size and position. 
The gill-openings are also separated by a distance somewhat 
greater than their long diameter, in this respect closely resembling 
Brauer’s specimens, and as regards item 3 I can find no other 
reference to it in the literature at my disposal. 
I give below measurements of my example and the two larger 
of Alcock’s specimens, and for purposes of reference have also given 
Brauer’s measurements of his example of U. lepturus :— 
U. lepturus, | U. vicinus (?), U. lepturus, 
Brauer. Alcock. Sewell. 
oe - a 
Total length 70 63 61 | 55 
Greatest height of body 6r1 ? ? 5°6 
Length of head 9'8 7+ 8°3 8°5 
Length of snout 207) 2°25 2254 2°3 
Diameter of eye 1°4 725 1°25 I'l5 
Distance from snout to anus 26°5 22 22 24 
Length of pectoral fin a 3°9 gral | 3°4 Zon 
| 
One cannot help being struck by the very close agreement of 
these figures, the only marked difference being the head-length ; 
this is in part due to a shorter snout length and also to a shrink- 
age of the soft parts in front of the gillopening which causes 
these to gape somewhat. When it is considered that Brauer’s and 
my measurements were taken on comparatively fresh specimens, 
whereas those obtained by Alcock have now been in spirit from 
I4—1I19g years, these slight differences lose any importance that 
might otherwise have been attributed to them. 
I consider that all the specimens in the Indian Museum must 
be regarded as examples of U. lepturus. 
LIST OF REFERENCES. 
Alcock, 1889.—‘‘ Natural History notes from H.M. Marine Sur- 
vey steamer ‘ Investigator,’ ’’ Aun. Mag. Nat. 
Hist. (vi), vol. iv. London. 
71891.—‘‘ Natural History notes from H.M. Marine Sur- 
vey steamer ‘Investigator,’’’ Ann. Mag. Nat. 
Hist. (vi), vol. viii. London. 
»,  1899.—A descriptive catalogue of the Indian Deep-sea 
Fishes in the Indian Museum. Calcutta. 
