92 CETACEA. 



5 inches ; length of teeth 1 inch, breadth of line J inch. Cuvier 

 thinks this is probably Orca gladiator. 



10. ORCA. 



Teeth conical, acute, large, occupying the whole edge nearly to 

 the notch, permanent. Dorsal fin high, falcate, in the middle 

 of the back. Pectoral broad, ovate. 



Skull rounded ; the hinder wing of the maxilla horizontally 

 spread over the orbits, the intermaxillaries only half the width of 

 the jaw-bones ; forehead flattened. Palate convex. 



Orca, Rondel, Pise. ; Gray, Zool. Ereb. $ Terror, 33, 1846. 

 Phocaena, sp., Wagler, N. S. Amph. 34. 

 Delphinus, sp., Linn.-, Illiger, Prod. 143, 1811. 

 Grampus, pars, Gray, Spic. Zool. 2, 1828. 



Delphinus Orca, Linn. S. Nat. i. 108, is evidently from Orca, 

 Belon, Pise. 18, Rond. Pise. 483, jig. , copied by Gesner, Aquat. 

 748. In the Mantissa, ii. 523, the reference to the Schwerdt 

 fische of Anderson and some other whalers is added, and proba- 

 bly from them is taken the following note : " Bellum gerit cum 

 Phocis, quas ope gladii dorsalis e lapidibus detrudit ; Balaenarum 

 Phocarumque tyrannus, qua turmatim adgreditur. Pinna dorsalis 

 est spina erisiformis, sex pedalis, cute vestita, basi latior." Mant. 

 ii. 523. Bonnaterre gave the name of Delphinus gladiator to 

 Anderson's figure, which represents the dorsal fin as situated near 

 the nape. 



Cuvier believed that the Orca of the ancients was probably a 

 Cachalot, and that the Killer is the Aries marinus of Pliny, ^Elian 

 and the Latins, who compared the white streak behind the eye to 

 a horn. Desmarest, Mam. 515, confines the name Delphinus 

 Orca to the animal intended by the ancients, and characterizes it 

 " Museau conforme comme celui de Dauphin vulgaire ; dents 

 larges et crenulees sur leurs bords," being a translation of Ar- 

 tedi (Gen. Piscium, ?6, 3), "D. rostro sursum repando, dentibus 

 latis serratis." 



O. Fabricius observes that he never saw D. Orca; but Prof. 

 Eschricht believes the Physeter microps of O. Fabricius to be the 

 Killer, or D. Orca of Linnaeus (Dan. Trans, xii.). 



1. ORCA GLADIATOR. The KILLER. 



Black ; circumscribed spot behind eye, spot on belly and under 

 side of tail white. Nose of skull nearly twice as long as the 

 width of the notch. Teeth }\, large, conical, slightly hooked. 



De Balsenis minoribus in utraque maxilla dentatis qu. Orcse vo- 

 cantur, Sibbald, Phal 6. t. 2, f. 3, tooth. 



