CETACEA. 71 
_ Ziphius, Cuvier, Oss. Foss.v.350; Gray, Zool. Erebus & Terror,27. 
_ Diodon, pars, Lesson, Tab. R. A.; Bell, Brit. Quad. 499. 
_ Anodon, pars, Lesson, Tab. R. A. 
 Heterodon, sp., Lesson, Man. Mam. 
_ Delphinorhynchus, sp., Gray, Ann. & Mag. N. H. 1846. 
Physeter, sp., Sow. Brit. Misc. 1. 
4 This genus is very like Delphinorhynchus, but is easily known 
by the large size of the teeth m the middle of each side, and the 
peculiar form of the lower jaw. Cuvier established the genus 
oh x 
_ on fragments of three fossil heads : 
1. Z. curvirostris, Cuv. Oss. Foss. v. 350. t. 27. f. 3. 
»2. Z. latirostris, Cuv. Oss. Foss. v. 352. t. 27. f. 4-8. 
3. Z. longirostris, Cuv. Oss. Foss. v. 356. t. 27. f. 9, 10. 
Cuvier remarks, describmg the first head, that “cette téte a, 
comme on voit, de grands rapports avec le Cachalot, et encore de 
_ plus grands avec l’Hyperoodon. Elle ne différe de ce dernier 
_ que parce que les maxillaires ne redressent point sur les cétés du 
_ museau en cloisons verticales, et que l’espéce de mur de derriére 
_ les narines ne se borne pas a s’élever verticalement, mais qu’il se 
-recourbe pour former un demi-déme au dessus de les cavités.”— 
» Oss. Foss. v. 352. . 
» Mr. Beli, following Lesson in adopting his heterogeneous genus 
_ Diodon, has considered Sowerby’s whale as a distinct genus from 
| Hyperoodon, but he observes, “‘whether the generic distinction of 
_ the two be correct, appears very doubtful.”—Brit. Mam. 499. 
* Jaws elongate. 
i 1. Zrputus SOWERBIENSIS. 
. Black, grey beneath ; lower jaw moderately broad behind, and 
_ gradually narrower and slightly bent down in front of the teeth. 
Physeter bidens, Sowerby, Brit. Misc. t. 1, and Icon. ined. in 
- Mus. Brit. t. 
- Diodon bidens, Bell, Brit. Quad. 497, fig. cop. Sowerby. 
_ Delphinus Sowerbii, Jardine, Nat. Lib. t. 12, cop. Sowerby. 
BD. Sowerbiensis, Blainv. in Desm. Nouv. Dict. H. N.ix. 177. 
4 Sowerbyi, Desm. Mam. 521. 
_ Delphinorhynchus bidens, Gray, Ann. & Mag. N. H. 1846. 
_Heterodon Sowerbyi, Lesson, Man. Mam. 419. 
Uiphins Sowerbiensis, Gray, Zool. Erebus & Terror, t. 572. 
 f. 3, 4, from Blainy. drawing, p. 53. t. , from skull. 
Inhab. North Sea. Elginshire, Brodie, 1800. 
_ The specimen yet observed was 16 feet long and 11 feet in cir- 
-eumference. 
