350 Mr. J. A. Murray on the Marine 
feet. mches. 
Height of dorsal fins avwee arene oes ee 9 
Width of dorsal sim. vnc pane head Seis sere 0 9 
Distance of dorsal from base of pectoral fin.. 0 3 
Distance of pectoral from base of ventral.... 1 103 
Height ofanaltiia')) AU LOS. CRAKS ofa) 0 21 
Height of second dorsal ...........00000 0% 0 21 
Girth round body at third gill-opening 3. 10 
Teeth 22, 
The snout is much produced and subtriangular; from the 
front of the eye to the tip of the snout it measures 64 inches, and 
the space between the eyes is 6inches. From the front of the 
eye to the tip of the snout on each side is a band, 4 inch wide, 
of a series of irregularly arranged minute pores, and there isa 
similar patch on the cheeks and below the snout, but extend- 
ing only to within 2 inches of the gums. The nostrils are 
conspicuous, open, and placed nearer the eye than the tip of 
the snout; the greatest diameter of each is 0°37 inch. The 
angle of the mouth is midway between the nostril and first 
gill-opening. Gzill-openings five, all of equal width. Teeth 
$3, their edges sharp and smooth, no basal cusps. The first 
set of three in the lower jaw is longest, and measures from 
1:25 to 1°37 inch in length, curved inwards, rather flattened 
on the outer side and convex or rounded on the inner. The 
third tooth on each side of the symphysis of the upper jaw is 
smaller than the rest. 
The first dorsal fin is placed nearer the pectoral than the 
ventral fin, and about its own length behind the hinder base 
of the pectoral; pectoral fin narrowing falcately from the 
base to the tip; anal fin situated about its own length poste- 
riorly to the second dorsal. A pit at the root of the caudal fin. 
The keel on the sides of the tail begins from in line with the 
origin of the anal fin; a strongly ridged lateral line is con- 
tinued from it, extending along the entire length of the body, 
rising upwards above the gill-openings, and terminating im- 
mediately behind the eye. Upper caudal lobe falcate, termi- 
nating in a point and not in a triangular lobe, as shown in 
the figure of L. Spallanzani in Mr. Day’s work. Colour 
dark plumbeous on the upper half, greyish on the lower half; 
underside of snout yellowish. Skin smooth. 
The synopsis below will show at a glance how this species - 
differs from the other described forms :— 
