(1.) The snout is plain; above, at the anterior extremity, are two elevations, which are meant for the prominent valvular nostrils of the crocodile. Occasionally one is placed behind the other (Fig. [6], A), instead of their being side by side, or even but one may be present. Laterally the jaws and teeth are usually characteristically rendered. In one arrow (Fig. [6], B), the teeth of the upper jaw on one side have, by an easy transition, been transformed into a zigzag line. The underside of the snout and head is ornamented with lines and dots which may have a longitudinal or transverse arrangement, or both may occur, as in Fig. [6], B.
(2.) The head and neck, like the snout, are plain above, except for an occasional representation of scales on the neck (Fig. [6], C), and the ventral ornamentation is a continuation of that of the underside of the snout. The eye is triangular, with the apex behind, rarely oval, as in Fig. [6], C; a band-pattern, usually a zigzag, which is always distinguishable from the ventral ornamentation, extends from the eye to the fore-limb.
(3.) The region of the fore-limb has generally the greatest thickness of the whole arrow. The limbs often arise from an ornamental band (Fig. [6], A), which represents the prominent scutes in this region of the real animal. The fore-limbs first project backwardly, and then run forwards towards the middle ventral line. The toes are usually indicated by transverse lines.
(4.) The trunk has usually a row of chevrons or diamonds running along the dorsal and ventral median lines; the lateral ornamentation usually consists of transverse lines, separated by rows of spots; sometimes these run longitudinally.
(5.) The hind-limbs may be separated dorsally by a triangular area (Fig. [6], A), or by a row of tubercles (Fig. [6], E). The limbs invariably bend forwards, and then backwards. The enclosed angle contains a row of spots or rarely a plain ridge.
(6.) Typically the tail is ornamented with three, occasionally two, dorsal rows of tubercles. The median row is a continuation of the median series, or the triangular area above noted; sometimes the median row is directly continuous with the central series on the back of the trunk. The lateral rows start from the insertions of the hind-limbs (Fig. [6], A, E, D). Beneath there is a large quadrangular plate, ornamented with concentric lines, the sides of which often extend up to the dorso-lateral angle of the tail.
Fig. 6.—Series of arrows from Torres Straits, collected and sketched by the author, and presented by him to the Cambridge Museum; one-third natural size.