380 ADDITIONS AND CORRECTIONS. 



perforation; the lateral processes are each two-thirds of the trans- 

 verse diameter of the articulating surface of the body of the vertehrse. 

 The neural canal of the second cervical vertebra subcircular, rather 

 less high than broad, and not quite so wide as half the diameter of 

 the front surface of tlie body of it. The third cervical vertebra has 

 a thin, oblong, transverse body, which is broader than high ; the 

 lateral processes are slender, truncated at the end, not so long as 

 the transverse diameter of the body, curved towards each other at the 

 end, but not united so as to form a ring. The neural canal of the 

 third cervical vertebra is oblong transverse, rounded above, as wide 

 as half the transverse diameter of the body of the vertebra, and about 

 one-third broader than high. The rest of the cervical vertebra are 

 free, not anchylosed either by the body or neural arch. The sixth 

 or seventh cervical has a thin body, with slender, nearly straight 

 upper lateral processes, and only a very short tubercle on each side 

 below. The first dorsal vertebra has a veiy high dorsal spine ; a 

 rather small, oblong body, and a strong lateral process on each side 

 above, which is expanded at the end. The eight ribs have simple 

 heads. 



These bones seem to show an animal three times as large as the 

 Balcenoptera rostrata of Europe. 



CATODONTID^ (page 195), add :— 



While the Catalogue has been going through the press much new 

 information respecting these animals has been received, especially the 

 knowledge of the animals of two species oiKogia, showing its affinity 

 to the Plujseter of Sibbald, and of a new genus of Sperm Whale, and 

 the opportunity of examining the skeleton of a Sperm "WTiale from the 

 west of Scotland and of one fi-om Australia. 



In the place of the Synopsis of the Genera at p. 195, substitute : — 



I. Head compressed, trtmeated in front. Bloioers in front of the upper 



paH of the head. Skidl elongate. Dorsal hump rounded. Pectoral 

 Jin short, trimcated. Catodontina. 



1. Catodon. The atlas oblong, transverse, nearly twice as broad as high ; 



the central canal subtrigonal, narrow below. 



2. Meganeitron. The atlas subcircular, rather broader than high ; the 



central canal circidar, in the middle of the body, widened above. 



II. Head depressed, rounded infro?it. Blowers at the bad; <f the forehead. 



Ilouth small, inferior. 'Dorsal Jin compressed, falcate. Pectoral 

 elongate, falcate. Physeterina. 



3. Physeter. Head large, elongate, rather depressed in front. 



4. KoGiA. Head moderate, blunt, and high in front Skull short and 



broad. The septum that divides the crown of the skull very sinuous, 

 folded so as to form a funnel-shaped concavity. 



5. EuPHYSETES. Head moderate, blunt, and high in front. Skull short 



and broad. The septum that divides the crown of the skull simple, 

 longitudinal, only slightly curved. 



