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Show 162 MR. w. R. o. GRANT O N T H E [Mar. 4, scales on the neck and belly are as large as the rest; those on the occiput very small. The diameter of the eye is contained four and a half times in the length of the head, one and a half in the interorbital space, and one and a half in the snout. The first dorsal is higher than the body; third and fourth spines are produced into short filaments. Colour brown, sometimes clouded with darker ; fins brownish, except the ventral, which is whitish ; second dorsal with four or five series of dark dots on the rays ; anal with a black and white margin. Caudal with a dark horseshoe-like marginal band met by a second passing along its middle rays. Hab. Mauritius and Bourbon. One adult specimen. 11. SICYDIUM ELEGANS, Steind. Sicydium elegans, Steindachner, SB. Ak. Wien, lxxx. p. 152. B. 6~' A. ~, L. lat. 32-33. (Teeth in the upper jaw tricuspid 1) The total length of the body is five times the length of the head. The width of the head is greater than the height and is two thirds of the length. The height of the body is about one sixth of the length. Scales on the neck and belly are rather smaller than the rest. The diameter of the eye equals the length of the snout and is nearly equal to the interorbital space ; it is contained about 3| times in the length of the head. The first and second dorsals are higher than the body. The length of the pectoral is greater than that of the head and equal to the caudal. Colour light brownish-yellow ; whitish on the belly, a dark brown band along the upper margin of the body, a second along the margin of the belly, and a third along the margin of the upper lip which loses itself between the eye and the base of the pectoral in small spots. The upper band extends along the side of the head to the snout in a horizontal line: above this, there is sometimes a third longitudinal band, which is joined to the corresponding one on the other side by a silver band which loses itself on the neck. All the fins with the exception of the ventral are transparent, spotted with violet. The spots on the caudal are larger than those on the other fins, and placed in oblique series. Longest specimen 33 millim. long (Steind.). Hab. Society Islands. 12. SICYDIUM XANTHURUM, Bleeker. Sicydium xanthurum, Bleeker, Sumatra, ii. p. 271 ; Giinth. Cat. Fish. iii. p. 93. Sicyopterus (Sicydiops) xanthurus, Bleeker, Arch. Neerl. Sc. Nat. ix. p,'26 ; et Versl. Ak. Amst. (2) ix. p. 283. •^* ^fuT2* *^*io""Ii' ^J" *at* ^' -*-*"• trans. 12. (Teeth in the upper jaw tricuspid?) A row of papillae on the gum beneath the upper lip; horizontal teeth conspicuous. |