Inhab. Brazil, river Amazons, 1500 miles from the sea (Bates).
See also S. (?) fluviatilis and S. (?) pallidus, Gray, l. c. p. 237; same locality, if distinct.
*** Beak of the skull elongate, rather depressed, broad, slightly compressed on the sides. Teeth small, five in an inch. Stenella.
7. Steno attenuatus.
B.M.
Steno attenuatus, Gray, l. c. pp. 235, 395; Syn. Whales & Dolph. p. 5.
Inhab. India.
The beak of the skull flattened (Zool. E. & T. t. 28).
This section is nearly intermediate between Steno and Clymenia.