5. LAGENORnYNcnrs. 273 



a. Skeleton. Yarmouth. Skull figured in ' Voy. of H.M.S. Ereb. ajid 



Terr.' tab. 11, j). 35. Mr. Brightwell's specimen. 

 h. Stufted skin of a. Yarmouth. 

 c. Skeleton. England? Mr. Stevens's Collection. 



Measurements of specimen from Yarmouth : — 



in. lin. 



Animal : Length, entire (?) 



Length of mouth 9 6 



Length of nose to eye 13 



Length to pectorals 20 



Length of pectoral 15 



Length to dorsal 41 



Length of dorsal 11 6 



Height of doreal 10 



Width of tail 22 



Skull : Length, entire 18 



Length of nose 8 6 



Width at orbit 9 5 



Width at notches 5 6 



Width of middle of beak 3 6 



Width of lower jaw at condyles .. 8 



Bladebone broader than high, "with long acromion and a promi- 

 nent articulation (t. 11. f. 9). Arm -bones very short ; fingers f6ur, 

 short, outer longest, second rather shorter, third and fourth very 

 short. Ear-bones large (see Van Beneden, I. c. t. 1. f. 7 & 8). 

 Vertebra) 90 or 94. The atlas and axis only anehylosed ; the rest 

 of the cervical vertebrae free. Scapula large. Thumb vsdthout a 

 phalange. 



Skeleton, Mus. BruxeUes ; Louvain ; at Mus. Copenhagen, Kiel, 

 and Berlin. 



c. Beak very short. Rostrum of skull only as long as the hrain-cavity. 

 Teeth nearly to the notch, 



9. Lagenorhynchus leucopleurus. White-sided Bottlemse. 



Skull: brain-ca\aty large, high at the top behind the blowhole. 

 Nose nearly as long as the brain-cavity, gradually and regularly 

 tapering on each side. Triangle in front of the blower flattened and 

 concave behind, with a slightly raised, lozenge-shaped space in the 

 front half. 



Above bluish-black, beneath white, with a large, oblique grey or 

 white longitudinal streak on the hinder part of each side. Teeth |-|, 

 small, acute, curved. 



Delphinus Tursio, Kiwz, Cat. Prej). IVIiale, 29, 1838 ; Ann. S,- Mag. 



N. H. 1864, xiv. t. 3. 

 Delphinus leucopleurus, Rasch, Nyt Mag. for Xatiirv. 1843, iv. 97 ; 



Mag. Zool. 1843, 3G9 ; Nilsson, Skand. Fauna, i. 598. 

 Delphinus Yhsemi, Escliricht. 



Jjagenorhynchus leucopleurus, Gray, Zool. Erehus <^- Terror, 34. t. 3 



X 



