Pseudorca, Gray, Synops. Whales & Dolph. p. 8.
Head rounded, convex; body moderate; dorsal fin moderate, in the centre of the back; arm-bones very short and thick, the humerus rather the shortest.
Triangle in front of the blowers flat. Teeth large, conical, acute, permanent. Pectoral fin falcate. Arm-bone short, broad. Metacarpal bones five, close together. Fingers very unequal, second and third much longer than the rest, six- or seven-jointed; first finger very short, two-jointed; third finger short, four-jointed, rather longer than the first two joints of the third finger. Tooth-line of the upper jaw nearly to the notch; of the lower jaw rather shorter. Lower jaw strong. Symphysis short, about as long as the space occupied by the first four teeth. Teeth large, conical, simple.
Vertebræ 50:—C. 7. D. 10. L. 9. C. 24.
The first to the sixth cervical vertebræ united by their bodies and dorsal processes. Bladebone broad, with large coracoid and acromion processes, which are much nearer together than usual.
* Beak blunt, truncated in front. Pseudorca.
1. Pseudorca crassidens.
Pseudorca crassidens, Gray, Cat. S. & W. p. 290. no. 1; Synops. Whales & Dolph. p. 8; Gervais, Ostéogr. Cét. t. 50. f. 7-17.
Beak about two-thirds the length of the brain-cavity, broad, rather tapering on the sides, truncated in front; teeth 8.
Inhab. North Sea.