136 Flukes curve inwards to the upper edge Have the anterior edges regularly convex - the post. edges very slightly concave, notch deep. Black above & below. The posterior edge of flukes very sharp dorsal do actually on a long base. It is thick & heavy. The post. edge of the dorsal is 520mm, anterior to the middle of the body. The ant. indt. is 270mml behind the axilla. Pectorals. Narrow are strongly falcate & tips pointed. The angle of the posterior edge is 140 mm. from the axilla. The length of the fin - is contained a little more than five times in the length of the body over the curve of the side. [The distal half of fins (excluding tips) have on the anterior edges a row of] small hard spines. Blowhole is situated in a decided depression- it has the characteristic shape among the Delphinidae - a not quite regular semicircle. The top of the head from blowhole to dorsal is flat. Navel The navel is directly opposite the tip of the dorsal fin. Head The head is globouse (large), the extremity over hanging the snout. The "beak"s short rounded & not prominent. It is formed by a slight constriction on the sides and a depression in front. Thickness of body. The greatest thickness (depth) of body is at a point a little behind the anterior insertion of the dorsal fin.