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Second Genus.— RORQU ALUS.* 



Characters. No teeth ; baleen short ; has a dorsal fin ; and 

 folds under chin and throat. 



RORQUALIS BOREALIS, Cuv. ; Less. 

 PLATE V. 



Great Northern Rorqual. — Razor-back and Finner, of whalers. 



Our readers will please to observe that we have, 

 after the example of Cuvier, adopted the name Ror- 

 qualus as a generic term, and include in this genus 

 some species, or at least supposed species, with 

 which some of them may be familiar. After the 

 Mysticetus there followed, according to the pre- 

 vailing arrangements, first a genus whose principal 

 distinction was its being suppHed with a dorsal fin ; 

 and then another, which, in addition to this third 

 fin, had certain folds extending from the under lip 

 along the chest and abdomen. Under the former of 

 these was included the Gihhar of Lacepede, which 

 was the same as the Physalis of Linnaeus, and the 

 Razor-hack of whalers ; and imder the latter, among 

 others, there was the Juhartes of Lacepede, the 

 Boops of Linnaeus, and also the Muscultcs of Lin- 



* RorqucUjus, in the Norwegian tongue, means whale with 

 folds. 



