2. STENo. 233 



ft. in. 



Length of animal, entire 5 11 



Length of pectoral 1 1 



Width of tail 1 11 



There is a skull in the Paris Museum marked " D. plumheus, Mala- 

 bar, Bussumier.^^ It measures as follows : Length 22 inches, beak 

 13|, teeth-line 12, width at notch 4g, symphysis of the lower jaw 5| 

 inches ; teeth -f^fy, large ; beak elongated^ higher than wide, com- 

 pressed in front; triangle extending rather before the teeth-lines. 

 In the Anatomical Museum of the Jardin dcs Plantes is a skull of 

 a foetal specimen of this species, from Malabar, which is 12 inches 

 long, with the beak 81 inches long, and 2| in. wide at the notch. The 

 symphysis of the lower jaw is 2^ inches long. The bones are not 

 united. The upper teeth are 36 ; they are as large as those of the 

 adult skull, and all enclosed in a cartilage and very close together. 

 From this skull it is evident that these animals are born with the full 

 number of teeth, which only elongate as they gradually develope. 



2, Steno roseiventris. 

 Greyish black above, under half rosy white ; orbit, streak from eye 

 to the pectoral, and pectoral fin dusky. Beak elongate, slender. 

 Beak of skull very long, half as long again as the brain-cavity. 

 Teeth il-fi. 



Delphinus roseiventris, Pucheran, Voy. Dumont cC Urville, t. 22. f. 2, 

 t. 28. f. 3, 4 (skull). 



Inhab. Molucca. 



The skull of a Dauphin a ventre roux from Molucca, in the Paris 

 Museum, has the nose very slender, attenuated. Palatal bone and 

 intermaxiUaries distinctly seen below ; intermaxillaries very convex, 

 dense ; lower jaw very compressed in front ; palate flat, rather con- 

 vex on each side behind, very spongy. 



3. Steno frontatus. The Fronted Dolphin. 



Nose of skull about three-fifths of its entire length, three times as 

 long as its width at the notch, rather compressed, rounded in front. 

 Lower jaw subangular and bent up at the end, united about one-third 

 of its length. Teeth f j-It) often rather rugose. 



Skin rough, back greyish black, belly dirty white. Female 9 feet 

 long. — Dr. Dickie. 



Delphinus frontatus, Cuv. Oss. Foss. v. t. 21. f. 7, 8, t. 22. f. 8; H. A. 



i. 288 ; Gray, List Mamm. B. M. 105 ; Oiven, Cat. Osteal. Coll. Mm. 



Coll. Surff. i'i. 453. 

 D. Reinwardtii, Schlegel, Abh. i. 21. t. 2. f. 3, 4, t. 4. f. 7 (skull and 



teeth). 

 Steno frontatus. Gray, Zool. Erebus ^ Terror, 43 ; Cat. Cetac. B. M. 



1850, 128 ; Bhjth, Cat. Mus. Asiatic Sac. Bengal, 91. 



Inhab. Indian Ocean. Bay of Bengal {Capt. Leiv'is, 1846). Red 

 Sea {J. Owen, Esq., 1844). Pacific. 



