SCANDINAVIAN CETACEA. 287 



like compartments two inches in depth, which on the inside of the jejunum appear as large 

 square openings, bounded by the transverse folds of the mucous membrane, and between each 

 pair of their openings, by its longitudinal smaller folds. Cirripeds are found attached to certain 

 parts of the body. 



Specimens of this genus are found in the seas of both the northern and southern hemi- 

 spheres, and in the Atlantic as well as in the Paciui.. ^i. j. s^. Gray, enumerate?, in the above- 

 quoted work, 4 species of this genus : 1st, M. Poeskop, Desmoulin, from the sea at the Cape of 

 Good Hope; 2nd, 31. longimana, Rudolphi, from the North Sea; 3rd, M. Americana, from the 

 sea at the Bermuda Islands ; and 4th, M. antarctica, Temminck, from the seas at Japan and the 

 Antarctic Seas. Eschricht considers them all as one species. They correspond with the Balæ- 

 nopteræ in their habits. They emigrate like them at the different seasons of the year^ and live 

 like them upon small fish and other sea animals. 



M. Boops, Fabricius. The Humpback. Swedish " Puckelhval." 

 Cervical verfehræ all separate. Scapula ivitkout acromion. 



Balæna boops, Fabricius. Fauna Groenlaudica, p. 38. 



— LONGIMANA, RudolpM. Ueber Balæna Longimana ; Abhandlungen d. K. 



Akademie d. Wissenschafteu z. Berlin fiir 1829, p. 133, 

 tabs. 1 — 5. 



— — Brandt u. Ratzeburg. Medicinisclie Zoologie, 1 bd., p. 122, 



tab. xVj fig. 2; tab. xvi, figs. 5 and 6. 

 Megaptera longimanAj J.E. Gray. Zoology of the Voyage of the Erebus and Terror, 



parts iii — v, p. 17. 

 " RoRHVALEN'" (Balæna boops^ Fabr.), S. Nilsson. Skandinavisk Fauna^ Daggdjuren, 



p. 639. 

 Kepgrkak (Kyphobalæna), D. F. Escfirichf. Zoologisch-Anatomisch-Physiologische 

 Untersuchungeii iiber die Nordischen Wallthiere, 

 p. 146. 

 Tue-Qval ?, Strom. Sondmors Beskr., p. 298. — Pontoppidan. Versuch einen Naturl. 

 ; Historie von Norwegen, 2 Theil, p. 232. 



KuGL-QvAL ?, A. C/iristie .- Eschricht, 1. e., p. 157. 



Note. — The above diagnosis has been given in order to distinguish our northern form from the 

 southern {Rorqual du Cap, Cuvier), from the sea at the Cape of Good Hope. The latter has a very 

 distinct rudiment of an acromion, which ours is entirely without ; and, besides this, the axis and the 3rd 

 cervical vertebra are united at the upper end of the arcus vertebras (which corresponds with the processus 

 spinosus), although the skeleton that is described by Cuvier,^ and offers these peculiarities, was from a 

 young specimen. As I have not had an opportunity of examining the Cape skeleton, I am doubtful 



^ ' Recherches sur les Ossemens Fossiles,' t. v, 1, pp. 381 and 383, tab. xxvi, figs. 9 

 and 20. 



