ADDITIONS AND CORRECTIONS. 373 



The atlas vertebra (which is represented in front of the mass) is 

 very unlike the atlas of any other known genus, as stated in my 

 former paper : it is characterized by its broad, extended, and trun- 

 cated lateral processes arising from the middle of the sides of the 

 body, and especially by the neural arch being broad, and furnished 

 with a high, sharp keel produced into a spine on the middle of the 

 hinder part of the upper edge. 



The second and third cervical vertebrae have thick, short, blunt 

 upper and lower lateral processes, far apart on the upper and lower 

 parts of the body. The two upper ones are anchylosed together into 

 a mass ; the two lower ones are separated at the end, thick, promi- 

 nent, rounded at the sides, and seem, in the front view (fig. 10), to 

 project under the lateral processes of the first cervical vertebra. 

 The fourth, fifth, sixth, and seventh cervicals are thin, and have very 

 thin lanceolate upper lateral processes, which are anchylosed together 

 and are partly free down the sides of the bodies of these vertebrae. 

 The lower lateral processes are rudimentary, only prominent tubercles. 

 The first and second dorsal, as in Balcena, seem to be more or less 

 anchylosed to the cervical vertebrae. 



The united vertebrae have peculiar characters which separate them 

 from the cervical vertebrae of any Bcdceaida known, so that they 

 indicate a new form of Right "WTiale. 



Megaptera longimana, var. Moorei (page 122). 

 The skeleton of the specimen which was taken in the estuary of 

 the Dee, 1863, has been mounted, and is exhibited in the Free 

 Museum at Liverpool. 



Poescopia Lalandii (page 126). 



Professor Yan Benedeu (Bull. Acad. Royale de Belgique, xviii. 

 1864) has published an essay to prove that the Cape Humpbacked 

 Whale is a distinct species from the Greenland Long-armed Whale. 

 He has described and figured some of the peculiarities ; but he has 

 overlooked the fact that the presence of the " bosse" or hump was 

 recognized by the early whalers, and Dudley, in the middle of the 

 last century, called them "Bunch or Humpbacked Whales:" he 

 seems to believe that Professor Esehricht discovered it. It was ex- 

 traordinary that so accurate an observer as my late friend Professor 

 Esehricht did not observe the difi^erence between the skeletons de- 

 scribed and figured by Rudolphi and himself and the figures of the 

 bones of the Cape Long-armed Whale figured by Cuvier. 



Eschrichtins robustus (page 133). 



Esclirichtius robustus, Gray, P. Z. S. 18Go, 42 (figure of vertebra). 



Mr. Pengelly has kindly informed me that a second cervical ver- 

 tebra of this whale was picked up, washed ashore at Babbicombe Bay, 

 early in June 1865. 



