MEGAPTERA. 67 
Nose as broad as the expanded brain cavity at the base, regularly 
attenuated to a fine point in front, and slightly arched downwards. 
Lower jaw laminar, compressed, and high ; the upper edge thin 
and inflexed on the greater part of its length, erect in front ; the 
lower edge inflexed in front the rest of the edge simple. Baleen 
elongate, slender, several times as long as broad, with a fringe of a 
single series of fine fibres; enamelled surface smooth and polished, 
thick. Cervical vertebre united into a single mass, Ribs ex- 
panded and flattened. Scapula low and broad, with well developed 
coracoid and coronoid process. 
Vertebre.—C. 7, 1). 17, L. 3, Cd. 16 =43. 
1. NEOBALENA MARGINATA, Gray, sp. (1866), 
Pigmy Right Whale. 
Head about one-fourth of the total length. Baleen pale yellow 
with a dark margin. Although two fresh specimens have recently 
come ashore at or near Adelaide, 8. A., no measurements or 
descriptions of the external characters appear to have been taken, 
and until Dr. Gray’s diagnosis of the genus, which is taken solely 
from photographs supplied by Dr. Hector, can be supplemented 
by original observations, no reliable description of the external 
characters is possible. 
Dimensions.—Said to be up to twenty feet. 
Habitat.—Southern Australian and New Zealand Seas. 
Reference.—Gray, Suppl. to B. M. Catal. Seals and Whales, p. 
40, figs. 1 (side view of skull) and 2 (top view of ditto). 
Genus IIJI.—_MEGAPTERA, Gray (1846). 
Skin of throat plicated. Head of moderate size. A low dorsal 
fin present. Fore limbs very long and narrow, about a fourth of 
the total length of animal, tetradactylous, the phalanges very nume- 
rous. Baleen short and broad. Cervical vertebra free. Scapula 
with the acromion and coracoid process absent or rudimentary. 
Vertebre.—C. 7, D. 14, L. 10 or 11, Cd. 21; total 52 or 53. 
1. Mecartrera Boops, Mabricius (1780). 
Hump-back Whale. 
Back and sides black ; belly yellowish-white, sometimes with 
irregular black spots. Anterior and posterior edges of pectoral 
fin irregularly notched. 
Dimensions.—Up to at least sixty feet. 
Habitat.— All seas except the tropical and subtropical. 
References.—Gray, B.M. Catal. Seals and Whales, p. 126, fig. 
19 (fifth cervical vertebra) and p. 128, fig. 20 (ear-bones); Scott, 
Seals.and Whales, p. 128. 
