274 DELPHINID.E. 



(foetus), 1. 12 (skull), t. 20. f. 8 (tongue) ; Ann. ^ May. N. II. 1804, 

 t. 3 ; Proc. Zool. Soc. 1804, 2:58. 



Inhab. North Sea. Orkney (Knox), 1835. Gulf of Christiania, 

 1843. 



a. Skeleton. Greenland. From Mr. Brandt's Collection. The 



specimen figured in the ' Voyage of the Erebus and Terror.' 



b. Foetus. North Sea, Faroe Islands. From Mr. Brandt's Collection. 



c. Skeleton, North Sea. From Mr. Brandt's Collection. 



The foetus has six bristles on each of the upper lips, the hinder 

 one being rather further from the rest than the others are apart, 

 which are equidistant, and of the same size. The tongue is flat 

 on the top and as wide as the space between the sides of the jaws, 

 with a regular sharp denticulated edge on each side, and with a 

 rather larger, conical, separate tubercle in front. The teeth are 

 not developed through the gums. The nose is nearly one-fifth the 

 length of the distance between the end of the nose and the eye. 

 The hinder part of the back has a rather thick convexity, like a long, 

 low, rounded, second dorsal fin, just before the tail ; the same part 

 of the foetus of Del2)7iimis Del^iMs ? and Steno ? fuscus is very much 

 compressed, and fined off to a very thin knife-like edge. 



The skuU is at once known from the skull of the L. alhirostris at 

 Norwich, by being smaller and the nose rather narrower, and espe- 

 cially by the hinder part of the intermaxillaries, which form the 

 triangle in front of the blower, being flattened and concave instead 

 of swollen and convex. Length, entire, 16 ; of nose, 8^ ; of lower 

 jaw, 13 inches. Breadth at orbit, 8| ; at notch, 4 ; at middle of 

 beak, 2| inches. 



Mr. Knox gives the following description and measurements of a 

 female sent from the Orkneys in May 1835 : — It weighed 14 stone. 

 Length along margin, from snout to centre of tail, 77| inches ; cir- 

 cumference, anterior, to dorsal fluke, 3S|^ inches ; length of pectoral 

 extremity free, 10 inches ; breadth from tip to tip of tail, 14 inches ; 

 length from snout to angle of mouth, 9 inches ; greatest possible 

 gape, 3^ inches. Length of cranium, 15 inches ; of spinal column, 

 55i = 70| inches. AVeight of skeleton, 1^ lb. Teeth fa . f^=120. 

 Vertebrae 81 ; cervical 7 ; dorsal 15 ; posterior 59. V-shaped bones 

 commencing between the fortieth and forty-first vertebrae. Pelvis 

 rudimentary, consisting of two cylindrical bones ; pelvic extremities 

 not developed. The external opening of the nostrils near the vertex 

 of the head was crescent-shaped, and placed transversely. The 

 dorsal fluke was midway between the snout and tail. 



The skeleton of this specimen is now in the Museum of the Uni- 

 versity of Edinburgh. The first, second, and third cervical vertebrae 

 are united by the spinous processes, the second and rest are thin. 

 The palate smooth, not grooved. Length of skull, 15| inches ; of 

 nose, 7^ inches; of lower jaw, 10 inches. "Width of slaill, at notch, 

 8|^ inches ; at orbit, 8 inches ; at middle of beak, 3 inches. Nose of 

 skull twice as long as the width at notch. Intermaxillaries narrowed 

 in front. The skuU has two large foramina on the flat part of the 



