102 



CETACEA. 



Skulls and skeleton in the Leyden Museum : Length, entire, 

 7 in. 21in.; of skull 16 lines. 



This species was first described by me from a skull in Brooke's 

 Museum, which is now at Leyden, and M. Schlegel has de- 

 scribed and figured a skull from a skeleton sent from the Faroe 

 Islands. It differs from the other species of the genus in the 

 nose of the skull being more slender and the teeth more nume- 

 rous. The teeth series, as in L. Electro, and L. Asia, do not 

 reach to the notch which separates the beak of the skull from the 

 brain-cavity. 



Professor Eschricht informs me that the animal is very like 

 D. leucopleurus, and Professor Nilsson has considered them as 

 the same. 



The skull in Mr. Brooke's collection was 15 inches long, the 

 head 7, the beak being 8 inches, and it was 4^ inches wide at its 

 base ; the teeth small and slender ; the beak long, attenuated, 

 acute, convex on the sides and flat in the centre above, and with 

 a deep central groove. The teeth f g-f , small, slender. The 

 bones in front of the inner nostrils keeled. 



7. LAGENORHYNCHUS CLANCULUS. 



Skull wide and rather high behind. Beak flat ; outline wide 

 at the base, rapidly tapering and acute in front, but rather con- 

 vex on the sides ; sides slightly rounded ; the hinder edge near 

 the notch only slightly turned up and rounded ; triangle to near 

 the middle of the beak. Lower jaw high behind. Teeth f f , 

 small, cylindrical, curved, rather acute at the tip ; the lower front 

 one very small. Intermaxillaries broad, hard. 



Lagenorhynchus clanculus, Gray, Proc. Zool. Soc. 1849, 1; Zoo/. 

 Erebmfy Terror, t. 35, ined. Skull. 



a. Skull. Pacific Ocean. From Dr. Dickie's Collection. 



Length, entire 14| inches. 



beak 7i 



skull 7i 



teeth-line 6 



lower jaw 11 J 



symphysis, lower jaw .... 1^ 



Width at notch 4 



orbit 7| 



middle of beak 2 



intermaxillary in middle . 1 J 



condyles above 2f 



Very peculiar for the elongation and reflexion of the beak be- 

 fore the notch, and the regular beveling of the sides of the beak. 



