116 SPECIMENS OF CETACEA. 



deep ; inferior surface narrow, bounded on inner side 

 by ridge, externally it blends with outer surface ; 

 anterior end somewhat pointed, bounds the wide 

 mouth of the cavity. (Figure, p. 115.) Periotic, length 

 If inch, breadth 1 inch, meatus wide, anterior surface 

 for tympanic deeply striated, pointed posteriorly. 

 Klagsvig, Faroe Islands. 



Donor — Dr Nelson Annandale. 



14. Tympano-periotic bones, left, of fcetus, fused, from No. 2. 



Tympanic 1| inch long, 1 inch broad. Periotic 1^ inch 

 long, 1 inch broad. 



15. Tympano-periotic bones, right, articulated, of G. melas. 



Tympanic, length If inch, breadth | inch, height 

 I inch. Periotic, length 1| inch, breadth 1| inch. 



16. Sternum of adult G. tnelas, upper two segments, each of 



which had a mesial foramen. Goodsir Collection. 



17. Sternum, from a fcetal G. melas, No. 2, with three distinct 



bony segments, the manubrium being almost com- 

 pletely divided into two lateral halves ; five pairs of 

 ossified costal cartilages articulate with sternum and 

 the xiphi-sternal cartilage. The right 6th apparently 

 does not reach it. Donor — Sir John Struthers, 1895. 



18. Hyoid bone, dried specimen, from the foetus of G. iinelas. 



No. 2, complete with stylo-hyoids. 



Donor — Sir John Struthers, 1895. 



19. Vertebrae, cervical, and upper three dorsal vertebrae 



bisected, left half. The upper three left ribs are 

 articulated to their vertebrae. Atlas and axis partially 

 fused, other vertebrae distinct. From the young 

 female of the school captured at Granton, 1867. The 

 skull is No. 9, and a number of the other bones of 

 the skeleton remain disarticulated. 



20. Caudal Fin, dried, showing the mesial notch, from a 



Black Fish (Globicephalus). 

 Barbados. Donor — Dr F. B. Archer. 



21. Pectoral Limbs, pair of, articulated, bones of. The manus 



is described and figured by Turner in Proc. Roy. 

 Soc. Edin., vol. xxix., 1909. Right manus contains 

 radiale, intermedium, ulnare, distal carpalia C^ Cg, Cg, 

 and a centrale ; the left has no centrale ; each has a 

 pisiform cartilage ; the digits have MPh.,, pollex, 

 MPhi2, MPhg, MPh,, MPh,. See figure, page 117. 



Goodsir Collection. 



