Figure 316.—Spears (tao); types of barbs:

a, simple barbs, formed by cutting nicks in a raised longitudinal edge. b, Simple barbs with a backward curve. c, Compound barb (tala-o-le-lo) composed of three points; a middle vertical point (1), a forward projecting point (2) and a backward projecting point (3); the middle points are sometimes in pairs (4); the compound points are arranged in 4 rows longitudinally; simple backward projecting points (5) towards point.of spear and simple forward projecting points (6) on proximal end of the barbed part.