44 



W. LlLLJEBORG, 



cular surfaces ("Hjorner", corners, Eschr.) for the processus spinosi inferiores, 

 especially the hinder ones, are larger and more prominent, as also wider 

 apart than in the 6 th , but less than in the 8 th , and the transversal groove 

 between them is deeper than in the 6 th , but shallower than in the 8* h . The 

 distance between the outer edges of the processus mammillares is greater 

 than in the 6 th , and about equal to that in the 8 th . It accordingly appears 

 in all its characteristics to lie between the two above mentioned (6 th and 

 8 th ) caudal vertebrae. In the form of the lateral processes it agrees ho- 

 vewer more nearly with the 6 th than with the 8 th . Its dimensions are: 

 Breadth of corpus in front 7"; height of d:o d:o 6}"; length of d:o, without 

 epiphyses, 3|"; height of processus spinosus If"; length of processus trans- 

 versi 2{"; distance between outer edges of processus mammillares 6j". 



The blade-bone is precisely like that we have described, but its 

 upper edge is more corroded and uneven, and the bone accordingly some- 

 what shorter. The point of attachement for the cartilaginous coracoide 

 process is similar to that of the left bone, as also is the acromion. 



The rib-fragment appears to have been part of one of the hinder 

 ribs, but both the upper and lower extremities are wanting. 



To the above made enumeration of some valuable contributions to a 

 more accurate knowledge of the Whalebone Whales we may add a worthy 

 treatise on the external characters and a part of the anatomy of Physalus 

 antiquorum , by James Murie, Prosector to the Zoological Society of Lon- 

 don, in the proceedings of that Society 1865, pag. 206, and with the in- 

 scription: "On the Anatomy of a Fin-Whale (Physalus antiquorum, Gray) 

 captured near Gravesend." 



ERRATA. 



Side 10, 8"' row from beneath read fins (pectoral) instead of fin. 



14 14'h in i 



„ x-±, It III „ 1. 



„ 19, 4 h „ — „ „ Balaenop „ Baleonop. 



