5. LAGENORIIYNCHTJS. 275 



temple on each side, instead of the single one in tlie sknll from 

 Christiauia. 



Delpliinus Delphis ?, Jackson, Boston Jonrn. N. H. v. 154. t. 



" Dusky hlack on the back, white on the belly, and lead-coloured 

 on the sides ; a dusky line, from 1 to 2 inches in ^^ddth, commenced 

 a little above the eye, and passing along the sides was lost in the 

 lead-colour within 18 or 20 inches of the tail ; and another, much less 

 distinct, ran parallel to this. 



" Inhab. Lynn, April 1842. Female, 7^ feet long ; nearly matiire. 



" Foetus 38 inches long. 



" Teeth not yet developed. 



" Vertebras 7G : viz. cervical 7, dorsal 14, caudal 55. The viscera, 

 &c., described." — Jackson, I. c. 155. t. 



" Shape slender. Jaws projecting, forming a large snout somewhat 

 like the beak of some species of water-birds. Spiracle near the top 

 of the head, about 1 inch in diameter and 13 inches from extremity 

 of snout. Greatest depth of body at origin of dorsal fin, 18 inches. 

 From snout to origin of dorsal fin 39 inches ; to the pectoral fin 19| 

 inches ; to ej'e 12 inches ; to posterior teeth 8 inches. Width of 

 jaw at the insertion of the posterior teeth 2| inches. Jaws armed 

 with numerous small, conical, incurved teeth, projecting above the 

 jaw from one-fourth to half an inch. Distance between the eyes 

 9 inches. The eyes, situated low on the side of the head, are black, 

 one-fourth of an inch in diameter, and present an oval appearance 

 from the reflection of the integument forming a sort of eyelid by 

 which the eye may be closed. Pectoral fin : length 4| inches ; 

 height 11 inches. Dorsal fin falciform or lunated : length 10 inches ; 

 height 10 inches. Caudal fin : length of each lobe 6 inches, and 

 height 13 inches ; united they form a beautiful lunated fin." — 

 Dr. Prescot, MS., in letter from Dr. Jaclson, 27th June 1840. 



See also 



1. Lagenorhynchus ? Nilssonii, Grai/, Proc. Zool. Soc. 1864, 238. 

 Delpliinus obsciuus, Nilsson, Skriinl. Favna (not Gray). 



Inhab. North Sea. 



Nilsson, in the ' Scandinavian Fauna,' records a species under the 

 name of Delphimis ohscurus, and refers it with doubt to the descrip- 

 tion and figure of the skull, and the species under that name, in the 

 ' Zoology of the Erebus and Terror,' and equally with doubt to D. su- 

 perciliosas of Schlegel. Both these species are described from the 

 same specimens, which were procm-ed at the Cape of Good Hope, 

 and therefore very unlikely to be of a species found also in the North 

 Sea. Nilsson's species may very likely be found in the British seas ; 

 so T have referred to it to draw zoologists' attention to the descrip- 

 tion. It is the oidy Swedish species that has not hitherto been 

 observed here. 



2. Lagenorhynchus lateralis, Ca^xin, U. S. Exptor. Exped. 82. t. 7. f. 1. 

 Delpliinus latcraUs, Peak, Zool. Erplor. Exped. Mamm. ■ib. 



"Teeth ^[^1 = 164? Form thick; snout small; body much 



■11.41 



t2 



