304 SPOLIA ZEYLANICA. 
The following notes refer to the Ceylon specimen :— 
Colour. 
Jet black above and at the sides, the belly being pinkish 
in colour. The two colours do not merge into one another 
at the sides, but are clearly separated. 
Measurements. 
Total length from tip of snout to tip of tail 6 = OD lenis 
From tip of snout to tip of dorsal fin .. OL29senn 
Height of dorsal fin oe ‘-) » 4d Dien: 
Length of flapper +1) (Bo en, 
Distance from front of eye to tip of snout oa!) U2 3venR, 
Depth of body just in front of dorsal fin so 1 63 )ena, 
Girth of the same place : ve 45 enn, 
Girth halfway between dorsal fin and base of tail 72 cm. 
Extreme horizontal distance between the two 
flukes of the tail id A 56 em. 
The vertebral formula of the specimen under examination 
is C7, D13, L9, Ca24. The 25th caudal vertebra is absent, 
but I am satisfied that it has been lost in the preparing of 
the skeleton. There are only fifteen hemal arches, the small 
posterior vertebrae apparently not having any, though it is 
possible that some of these may have been lost in preparing 
the skeleton owing to their small size. 
There are thirteen ribs, the anterior eight alone having 
both capitulum and tuberculum. Each rib consists of a 
single bone, from the ventral end of which is a cartilaginous 
extension, with the possible exception of the last pair, which 
are exceedingly short. 
The sternum consists of three parts, the presternum being 
the largest, and having a deep cleft in its anterior border. 
The first pair of ribs articulate with lateral expansions of the 
presternum. The second pair of ribs joms the sternum 
between the presternum and mesosternum, and the third 
pair between the mesosternum and xiphisternum. The 
cartilaginous extensions of the fourth and fifth ribs unite and 
join the posterior part of the xiphisternum. The last eight 
ribs are not joined to the sternum, 
