ADDITIONS AND CORRECTIONS. 



379 



" Of the pectoral fin we have only the scapula, of which I send 

 yon a drawing (fig. 85) ; both processes are well developed and some- 

 what compressed. 



Fig. 85. 



Scapula. 



" The animal was found some leagues from Euenos Ayres, on the 

 banks of the river Plata, where it came ashore some thirty years 

 ago. It was brought to the gardens of Rosas, at Palermo, where the 

 skeleton was exhibited a long time, tiU, after the fall of the tyrant, 

 it was transferred to the Museum. The parts now deficient were 

 then lost. 



" I suppose that the species might be the same as that you have 

 indicated in your synopsis as Bulmioptera austraUs, Desmoulins 

 (Voy. Ereb. and Terror, Mamm. p. 20) ; but as I have never seen 

 that animal, I am unable to speak concerning its external appearance. 

 Thei'efore I believe it is better to describe the species in question 

 under a new name, and I propose to you, if you please to accept it, 

 that of Balcenoptera 2>ctt(tchonica." 



" P.S. — I have told you nothing of the under jaw of Balcenoptera 

 patachonica, because the surface of the bono is much destroyed by 

 long exposure to the air, rain, and sun ; but the hinder part, with 

 the coronoid process, is represented in fig. 86." — Burmeister, Proc. 

 Zool. Soc. 1865, 191-195. 



Fiff. 86. 



