OCR Text |
Show 916 MR. G. A. BOULENGER ON NEW FISHES [Dec. 1, Most nearly allied to C. calllpterus, Gthr.1, with which it agrees in tbe dentition. 22-30 teeth on each side of the outer series of the upper jaw. Depth of body 2\ to 2f- in total length, length of head 3 to 3^ times. Eye nearly equally distant from the upper lip and the gill-opening, its diameter 4 times in length of head, 1^ times in interorbital width, and equal to prseorbital; maxillary not extending quite to below anterior border of eye; four series of scales on the cheek below the eye; large scales on the opercle and on the interorbital region ; prseopercular limbs forming a right angle. Gill-rakers very short, 8 on lower part of anterior arch. Dorsal X V I 12-13 ; spines increasing in length to the last, which is | length of head. Pectoral pointed, a little longer than the head ; ventrals shorter, not reaching the vent. Anal III 9-10; third spine longest, as long as middle dorsals. Caudal rounded (?). Caudal peduncle not longer than deep. Scales rough but not 3 20-2 '^ denticulate, 30-32 j^ZLs; kit- !• i^ii' Body without distinct markings; snout and a spot on the opercle blackish; dorsal fin with blackish spots and oblique bars. Total length 220 millim. Three specimens. OREOCHROMIS SHIRANUS, sp. n. (Fig. 2, p. 917.) Teeth very small, in 5 to 7 series in the upper jaw, the outer with notched, bicuspid, brown crowns, the others tricuspid; 35 to 47 teeth on each side of the outer series of the upper jaw. Depth of body 2g to 2i in total length, length of head 3 times. Eye equally distant from the end of the snout and the gill-opening, its diameter 4 to 4| times in length of head, 1| to 2 times in interorbital width, and nearly equal to prseorbital; maxillary not extending to below anterior border of eye; two series of scales on the cheek below the eye, lower largest; opercle scaleless; prseopercular limbs forming a right angle. Gill-rakers short, 15-] 8 on lower part of anterior arch. Dorsal XVI-XVII 10-12; spines increasing in length to tbe last, which is \ length of head or a little less. Pectoral ? (broken); ventral reaching vent. Anal IV 9-10 ; fourth spine longest, as long as and stronger than middle dorsals. Caudal peduncle not longer than deep. Scales rough but not denticulate, 31-32 ^ ; lat. 1. 2~. Nothing can be said of the coloration, the condition of the specimens being too bad. Total length 210 millim. Five specimens. 1 A comparison with the original description (P. Z. S. 1893, p. 623) is misleading in so far as the number of dorsal spines is given as 14, which is exceptional, the normal number being 15 or 16. Out of the 5 type specimens, only the one figured (from Zomba) has 14 spines; two, including tbe largest specimen received from the Rev. J. A. Williams, have 15 spines; the other two have 16. |