OF TWO SPECIES OF BRITISH DOLPHINS. i) 
Total length, in a straight line from end of beak to notch in middle inches. 
Gteiatl eres, Seem s, ad ks te es BS. ee eae AGG) 
End of beak to anterior edge of dorsal fin . . . . ... =.=. =. «50:0 
5 35 AUSLEROMMAOUUHs cys sey cate Ms, ay acs CM Rem ne ne 
33 3 IDIOWEDOIGI ry vn hs Sh do esate me eas se St oO 
ry PF ANLRIOMANEIeORCYC 2c. 3) b,c) oe Gl, oi 
ihenothvoteyesaperuuremmm lla 4, Shae ks fs A! se on ee 11 
From hinder corner of eye to aperture of ear . . ...... ~~. 3°25 
From angle of mouth to anterior angle of eye . . . . . . 1... 26 
From end of lower jaw to anterior edge of pectoral fin . . . . . . 240 
Tength of pectoral fm,im straight line . . .. =... =. +. =. = J55 
Greatest bresdthiotpectoraltiny 2 2 5 2 4 3 - ene 6:0 
ene thyombasesordorsalifiny, <5). = = oe e8\s « shee lcnO 
Heri nomlorsalsineer@ey ct, 2 at ks oe a al ee 9:0 
Breadihmoim@eandaltintmwey ct ec ce st rel); se 3, See ae 
All the upper parts were of a shining greyish black, shading off to white below, as 
seen in the figure, the change of colour following an irregular line from the angle of 
the mouth to the origin of the pectoral fin and continued backwards at the same level. 
The edge of the upper lip and the tip of the nose were whitish; both sides of the 
pectoral and caudal fins were black. ‘There was no other colour to be distinguished 
on the whole surface but black, white, and the intermediate grey. The usual “ screw ” 
form of the caudal fin in the Cetacea was very marked, the upper surface of the right 
lobe being concave, that of the left lobe convex. 
This species is rare in the Mediterranean, though Gervais gives several instances of 
its capture in the Gulf of Lyons. It probably has a more northern range than D. 
delphis ; but, as in the case of that species, there is still much obscurity as to the 
exact limits of its distribution. 
Mr. Buckland has added casts of both these specimens to his valuable series of 
models of Cetacea, which exhibit, better than by any other method yet devised, the 
form, proportions, and colour of these animals, otherwise so difficult of preservation. 
DESCRIPTION OF THE PLATE. 
PLATE I. 
Fig. 1. Delphinus delphis 2, from an original drawing, by R. W. Sherwin, of a specimen 
captured off the coast of Cornwall in March 1879. 
Fig. 2. Delphinus tursio ¢, from an original drawing, by W. H. Flower, of a specimen 
captured near Holyhead, October 5, 1868. 
