O. LAGEXOHHYNCnUS. 273 



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



Terr.' tab. 11, p. 35. Mr. Brightwell's specimen. 

 h. Stuffed sldu 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 ol doraal 10 



Width of tail 22 



Skiill : Length, entire 18 



Length of nose 8 6 



Width at orbit 9 5 



AVidth 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 four, 

 short, outer longest, second rather shorter, tliird 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 anchylosed ; the rest 

 of the cei-vical vertebrae free. Scapula large. Thumb without a 

 phalange. 



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

 and Berlin. 



c. Beak very short. Rostrum of skull oyily as long as the brain-cavity. 



Teeth nearlu to the notch. , ^ , 



9. Lagenorhynchus leucopleurus. Whte-suled Bottlenose. -t-JD. 



Skull: brain-ca-saty 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, ^nth a large, oblique grey or 

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

 small, acute, curved. 



Delpliinus Tiirsio, Knox, Cat. Prep, llltale, 29, 1838 ; Ann. ^- Mag. 



X. II. 18{!4, xiv. t. 3. 

 Delphinus leucopleurus, Jia.'tch, Nyt Mag. for Xatiirv. 1843, iv. 97 ; 



Mag. Zool. 184-"?, 3(i!); Xikson, Skand. Fauna, i. 598. 

 Delphinus Ibsenii, Eschricht. 

 Lagenorhynchus leucopleurus, Gray, Zool. Erebu.^ Sf Terror, 34. t. 3 



T 



