128 



SPECIMENS OF CETACEA. 



13. Manus, dorsal surface of left (figure below.) R, radius ; U, 

 ulna; r, radiale ; i, intermedium; ti, ulnare ; C2+C3, 

 second and third distal carpalia ; C4, fourth distal car- 

 pale. I to V, the five digits ; P, pollex. See Turner in 

 Proc. Roy. Soc. Edin., vol. xxix., 1909, for description. 



(2) Lagenorhynchus acutus. (Lrh. AC.) 

 (White-sided Dolphin.) 



Delphinus acutus, Gray, Spic. ZooL, vol. i., 1828. 

 Delphinus leucopleurus, Ra^eh, Nova Spec. Descript., 1843. 

 Leucopleurus arcticus, Gray, Synops. Whales and Dolphins, 

 1868. 



Colour, top of head, back, and adjoining sides, dorsal 

 fin, pectoral limbs, dorsum of tail, black ; light 

 yellowish-brown and white band on side of body ; 

 venter white and greyish-white. Length 6 to 8^ feet. 

 Beak pointed, half length of skull, ii,s breadth at 

 base about half the length of beak ; dorsal fin hiffh, 

 falcate ; pectoral limb short, tip pointed ; pterygoids 

 meeting mesially. Vertebral formula C^D-fgLCd^g = 80. 

 Teeth numerous, acute. See Plate XV. 



1. Skeleton, female, articulated, with dorsal and caudal 

 fins, pelvic bones, and hyoid. Length of animal 

 6 feet. Lenofth of skeleton 5 feet 9 inches. Vertebral 



