The Zoologist — January, 1873. 3361 



1. Balcena myslicetus (Right Whale). — Inhabits North Seas; 

 Greenland ; said formerly to have been an occasional visitor. 

 Peterhead, 1682; Sihbald. Zetland; Barclay. Skeleton from 

 Greenland (Mus. Roy. Coll. Surg.) and dried foetus (Mus. Hull and 

 Liverpool). 



2. BalcBiia hrilannica. Bahena myslicetus, var., Gray, Cat. 

 Seals and Whales, 1866, p. 83, fig. 3 (cervical vertebrae), copied as 

 Balsena biscayensis. Van Beneden, Osteog. Cetac. t. vii. fig. 7. 

 MacLeayius brilannicus, Gray, Ann. and Mag. Nat. Hist., 1870, 

 vi. pp. 198 and 204; Suppl. Cat. Seals and Whales, p. 46. — Inhabits 

 British Channel. Cervical vertebrae, dredged up at Lyme Regis, 

 in the British Museum. 



The British Museum has just received a skeleton of MacLeayius 

 australiensis, which shows that there is a very great difference 

 between its cervical vertebrae and that of M. britannicus from Lyme 

 Regis, which has caused me to make it into a different genus. 



Sub-order IT. Bal^nopteridea. 



Head moderate. Body elongate. Dorsal fin distinct, rarely 

 ■ wanting. Belly longitudinally plaited, rarely smooth. Baleen 

 short, broad. Maxillary bones broad. Pectoral fin lanceolate ; 

 arms elongate ; radius and ulna much longer than the humerus. 

 Fingers four, subequal. Vertebrae of the neck free or partially 

 united. Tympanic bones oblong or ovate. 



Family I. Megapteeid.e (Humpbacked Whales). — Dorsal fin 

 low, broad. Pectoral fin very long, with four very long fingers of 

 many phalanges. Vertebra'- 50 or 60. Cervical vertebrae often 

 anchylosed. Lateral process of the axis rarely ossified. Neural 

 canal large, high, triangular. Ribs 14 or 15. 



i. Megaptera. — Blade-bone without acromion or coracoid pro- 

 cess. Body of cervical vertebrse subcircular. 



1, Megaptera longimana (The Humpback). Inhabits North Sea. 

 Newcastle ; Johnston. Foetus from Greenland (Brit. Mus.) Var. 

 Morei, Gray, 1. c, p. 122. Inhabits estuary of the Dee. 1863; 

 J. More. Skeleton of female (Free Museum, Liverpool). 



ii. EscHEiCHTlDS. — Blade-boue with large coracoid process. 

 Body of cervical vertebrae separate, small, roundish oblong. The 

 neural canal very broad and high.— Gray, Cat. Seals and Whales, 

 1866, p. 132, f. 21 (bones). 



