60 MR. T. SOUTHWELL ON OCCURRENCE OF YOUNG GRAMPUSES. 
of the ventral margin of the body, when it continued horizontally 
till about under the centre of the dorsal lin ; then taking a sudden 
bend upwards and backwards till it reached the centre of the 
vertical depth of the body at a point immediately below the 
posterior border of the dorsal fin, it continued horizontally as far 
as midway between the posterior border of the dorsal fin and the 
insertion of the caudal appendage, where it suddenly returned 
upon itself, slanting downwards to within one-third of the distance 
from the first deflection, and resumed the horizontal line till brought 
to a point by the curvature of the body, where it merged into the 
uniform black colour of the extremity. The under surface of the 
caudal fin was also of the same yellowish white, which extended 
a short distance along the inferior caudal ridge, gradually, but still 
sharply defined, giving place to the black colour of the under 
surface of the tapering extremity. 
The dorsal fin was rather high and slightly falcate, and the 
borders of the caudal flukes almost flat, with a well-defined central 
notch. The pectoral limb was rather broad, and measured 
1 -1 ! inches along the anterior border; 12 inches in a direct line 
from the point of insertion to the posterior angle ; and 7 inches 
in its greatest depth ; somewhat bluntly truncated, but ending in 
a rather pointed extremity. 
The following were some of the principal measurements : — 
ft. in. 
Extreme length, from point of rostrum to medial notch 
of caudal fin, in a straight line ... ... 7 6 
Point of rostrum to blow-hole ... .. ... 0 14£ 
Blow-hole to anterior insertion of dorsal fin .. . ... 2 If 
Base of dorsal fin ... ... ... .11 
Prom posterior insertion of dorsal fin to medial notch 
of caudal fin ... ... ... ..32 
Height of dorsal fin 
Prom tip to tip of flukes 
Greatest dorso-ventral height (in front of dorsal fin) .. 
Length of lower border of pectoral limb (along curve) 
„ upper ,, ,, j’ jj 
Erom tip of lower jaw to angle of mouth 
Prom the tip of the lower jaw to the anal opening 
Mammary slits ... 
Anal opening to caudal notch 
0 8f 
1 10 
1 9 
1 2k 
0 1H 
0 10 £ 
3 5.V 
0 6 ) 
4 li 
Sex, female ; weight, 4 cwt. 
