130 é CETACEA. 
The skulls of this species are easily known from the forme 
by being much more slender and more attenuated in front, an 
by the head, though longer, being 23 inches narrower over th 
orbit ; lower jaw nearly straight below, united for more than $ it 
length. 4 
It may be the same as D. rostratus, but the teeth are more 
numerous; and Cuvier’s figure, which he thought might be 
Breda’s species, certamly much better represents a common 
Indian species than this. ’ 
In one of the skulls the nose is rather. shorter and more de- 
pressed. 
4. STENO ATTENUATUS. The SLENDER-BEAKED DOLPHIN: 
Nose of skull 2 of entire length, 1} the length of the skull, 
28 the length of the width of the Aotel: slender, tapering in 
front ; ; intermaxillaries forming a long triangular part of the front 
of the palate; vomer elongate, in middle of palate; teeth $8. — 
Delphinus attenuatus, Gray, List Mam. B. M. 105. Lh 
Steno attenuatus, Gray, Zool. Ereb. & Terror, 43. t. 28, skull. d 
Inhab. Cape Horn. Mus. Coll. Surg. Edinb. i” 
a. Skull. Presented by Mrs. Ince. 
b. Skull. 7 
The specimen figured in the Voyage of the Erebus and Terror, 
pl. 28. | > 
e. Skull. 9° N. lat. Presented by A. Pearson, Esq. 
Measurement of the three skulls — 
a b. c. 
in. lin in. lin. in. lin. 
Length, entire ...........- Le Ae 16: 6 Se 
Sal ke dee UG sales s pees 8 9 10 0 ee 
‘4, of lower jaw...... 1Bt at" Dye 13' Oa 
Breadth of temples ...... 6 0 6 Bi 6 2 
ei Nog anotelh orgs. ive de 33). Boe B48 358 
» of middle of beak 1 6 Lu, 1w8.oe 
, of intermaxillaries 0 1 Ox ck G As 
See 
Delphinus pseudodelphis, Wiegm. Schreb. t. 358, skull; Reichb 
Cetae. Anat. t.18. Teeth 42 or $3. “Skull im Mus. 21 
the form of D. Malayanus, but beth: shorter, and teeth sho ie 
and thinner, very like those of D. Delphis. Palate not groove¢ 
Symphysis of lower jaw rather long.”” May be the same as thi 
Steno attenuatus, but the Museum copy of Schreber does no 
contain the plate referred to. Gl 
.* 
