LAGENORHYNCHUS. 127 



inches, breadth | inch, height f inch ; outer surface 

 flattened behind, sliglitly convex in front, Hp-like 

 process relatively large and prolonged slightly on 

 outer surface ; inner surface convex, and its upper 

 border inclines rapidly to Eustachian opening ; bilobed 

 behind, outer smooth, larger, rounded ; inner smaller, 

 laterally compressed, pointed ; cleft deep, wide, short ; 

 inferior surface smooth, broad, slightly concave ; 

 lateral borders faintly marked, not ridged; cavity 

 opens by narrow mouth at anterior end of inferior sur- 

 face. (Figure below.) Periotic length 1| inch, breadth 

 f inch ; meatus large. Cunningham Collection. 



8. Tympanic bone, right, of L. albrirostris from No. 4, 



the skull presented by the Rev. Dr Joass. Length 

 1| inch, breadth | inch, height f inch. 



9. Vertebrae, seven cervical ; atlas and axis fused ; from j'oung 



L. alhirostris, No. 6. Cunningham Collection. 



lO.'^Stomach of adult White - beaked Dolphin, inflated and 

 dried. The cesophageal compartment or paunch is 

 19 inches long; the cardiac or 2nd compartment is 

 subglobular in form ; the 3rd or intermediate com- 

 partment has the size of a small pear and opens 

 into the 4th or pyloric compartment, 12 inches long, 

 tubular in shape, which opens into the funnel-shaped 

 duodenum. From No. 1. See Turner in Journ. Anat. 

 and Phys., vol. xxiii., 1889. 

 Stonehaven, July 1888. 



11. Stomach of calf of White-beaked Dolpliin, inflated and 



dried. The compartments correspond in number and 

 arrangement with the adult, but are necessarily much 

 less in their dimensions. Turner Collection. 



12. Hair. Beak of young L. alhirostris, showing the white 



integument of the upper lip with several delicate hairs 

 and the mouths of follicles from which hairs had at 

 one time extruded. A V-shaped furrow marks ofl' the 

 lip from the front of the head. See Turner in Proc. 

 Roy. Phys. Soc, vol. x., 1881-89. 



