46 BAL^NOPTEUOIDEA. 



lateral process. Lower lateral process elongate, compressed, rather 

 swollen in the middle, truncated at the end and bent forward, the 

 upper processes of the second and third cervical vertebrae forming a 

 crest (Cat. Seals & Whales, p. 105, f. 10, 11, and p. 372, f. 74, 75). 

 Baleen ? 



1. Macleayius australiensis. 



Macleayius australiensis, Gray, I. c. pp. 105 (figs. 10, 11), 371 (figs. 71, 

 75) ; Synops. Whales Sf Dolph. p. 2. 



Inhab. Australian seas. 



Atlas vertebra — the width, measuring from the extremity of the 

 lower processes, 28^ inches ; width of the atlas 25 inches ; height 

 from the base of atlas to top of crest 18 inches. Thickness of last 

 cervical vertebra 10 inches. 



2. Macleayius britannicus. B.M. 



Macleavius britannicus, Gray, Ann. fy Maq. N. H. 1870, vi. pp. 198 



& 204. 

 Balsena biscayensis, Van Beneden (part.), Osteogr. Cet. tab. 7. fig. 7 



(copied from Gray, Cat. Seals fy Whales, p. 83, fig. 3). 

 Balaena britannica, Gray, Ann. 8f Mag. N. H. 1870, vi. p. 200. 



Inhab. Lyme Regis, Dorsetshire. 



Cervical vertebras of Balccna from Lyme Regis (Gray, Cat. Seals 

 & Whales, p. 83, f. 3) copied on plate of Balcena biscayensis, Osteog. 

 Cet. t. 7. f. 7. Dredged up at Lyme Regis. The lateral processes of 

 this bone are much more like those of Macleayius australiensis than 

 those of any other species ; yet it differs in the outer edge of the 

 broad lateral process being oblique, narrowed towards the base, and 

 in the lower lateral process being shorter, turned up at the end, and 

 the outer end obliquely truncated and subangular below. This 

 massive vertebra has no affinity with B. biscayensis, and indicates 

 the existence of a completely different new species of Right Whales, 

 which appears to be an inhabitant of our seas. 



Suborder II. BAL^NOPTEROIDEA (cf. p. 36). 



Balsenopteridse, Gray, I. c. pp. 61, 106. 

 Balamopteroidea, Gray, Synops. Whales §• Dolph. p. 2. 



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 4, subequal. Vertebrae of the neck free, or partially 

 united. Tympanic bones oblong or ovate. 



