DELPHINUS. 133 



length IJ inch, breadth |- inch. Outer surface of 

 tympanic convex, anteriorly flattened behind the lip- 

 like process ; inner surface, f inch in height, sloping 

 rapidly to Eustachian end; bilobed as in No. 6. 

 Tympanic ossicles present. From the Shetland speci- 

 men, No. 2. 



8. Tympano-periotic bones, right, from No. 3 ; the left bones 



are attached to the skull. Tympanic, length If inch, 

 breadth | inch; periotic, length 1^ inch, breadth 

 h inch. Tympanic ossicles loose. 



9. Manus, right, dorsal surface; R, radius; U, Ulna; r, 



radiale ; i, intermedium ; tv, ulnare ; distal carpale i, 

 carpale ii, and a carpale representing Ciii + Civ; |>, 

 pisiform cartilage ; P, pollex ; I to V, five metacarpals. 





10. stomach of Common Dolphin, inflated and dried. From 

 the Dalmeny specimen. No. 1. The 1st oesophageal 

 compartment or paunch is 5| inches long; the 2nd 

 or cardiac compartment is subglobular, 3| by 2| 

 inches; the 3rd and 4th compartments are inter- 

 mediate, the 3rd not as large as a walnut, the 4th 

 the _ size of a walnut ; the 5th pyloric is tubular, 

 10 inches long, joins the subglobular dilatation of 

 the duodenum. (Figure on page 134.) The stomach 

 in the fresh state is described b}^ Turner in Journ. 

 Anat. and Phys., vol. xxiii., 1889.^ 



