1864.] DR. J. E. GRAY ON BRITISH CETACEA. 203 
The lower truncated end very broad, with a regular convexity on 
the inner half, and keeled on the outer half of the upper margin ; 
the lower margin angular. The lower surface is moderately convex, 
the aperture very irregular, narrow, and contracted above, truncated 
below (see fig. 2). 
Hab. New Zealand, Otago (Mr. Stuart). 
This is most probably the ear-bone of the Whale described by 
me as Balena antipodarum, in Dieffenbach’s Journal, t. 1. 
Fig. 2. 
Tympanic Bones of Caperea antipodarum. 
Fam. 2. BALZNOPTERID. 
Dorsal fin distinct. Belly plaited. Baleen short and broad. 
Maxillary bones broad, expanded, sharp-edged. Pectoral lanceolate. 
Vertebree of neck free; first and second rarely anchylosed. Tym- 
panic bone oblong ovate. Frontal bone flat, expanded, broad over 
the orbit ; orbit large. Scapula broader than high, with or without 
a coracoid. 
Martens (Spitz. 125, t. ii. f. ¢) figures a whale, under the name 
of Fin-fish, which agrees in all points with this group ; but, as there 
are no folds on the belly in the figure, Ray, and after him Brisson and 
Linneeus, established for it a species under the name of Balena phy- 
salus (S. N.i.186). As, however, the name Fin-fish, used by Mar- 
tens, is the one now given by the Greenland whalers to these fin-backed 
whales with plaited bellies, and as Martens does not mention the 
colour, nor say a word about the belly, and as Scoresby says, from 
report, that the skin of the Fin-fish is smooth, “except about the 
sides of the thorax, where longitudinal rugee or sulci occur,” I 
think there can be little doubt that this whale was only a common 
finner, and that the absence of the plaits arose from a mistake of 
the artist. This renders the existence of the section which Lacéptde 
