. Bulletin of the British Museum (Natural History). 4 E. TREWAVAS The two species have in common the following characters: Scales 27-28 in the lateral line series, 14-16 around caudal peduncle; pattern of circuli in some scales roman, in others gothic (see p. 14 and fig. 10). Caudal peduncle very short, its length 0-5-0-8 of its depth. Depth of body 41 •5-47-5% SL, length of head 35-39. Pectoral fin pointed or rounded, but not falcate, apparently com- plete in only two of the P. ocellifer, in which its length is 32•3-35-0% SL; in the other species it is 27-3-32-3%, shorter than head. Dorsal fo
. Bulletin of the British Museum (Natural History). 4 E. TREWAVAS The two species have in common the following characters: Scales 27-28 in the lateral line series, 14-16 around caudal peduncle; pattern of circuli in some scales roman, in others gothic (see p. 14 and fig. 10). Caudal peduncle very short, its length 0-5-0-8 of its depth. Depth of body 41 •5-47-5% SL, length of head 35-39. Pectoral fin pointed or rounded, but not falcate, apparently com- plete in only two of the P. ocellifer, in which its length is 32•3-35-0% SL; in the other species it is 27-3-32-3%, shorter than head. Dorsal formula XIII 11-12, XIV 10-12 or XV lo-ii, modal formula in P. nigrofasciatus XIV 11, modal total 26; a different formula in each of the four P. ocellifer (XIII 11, XIV lo-ii, XV 11). Dorsal and anal soft rays produced in adult so that when they are laid back they reach a vertical in the posterior 2/3 of the caudal; pelvic ending in a long black filament extending to some part of the anal fin, in some as far as the hind end of its base; these prolongations occurring in both sexes. Caudal bluntly rounded, or truncate in the middle and rounded at the corners. Except in interorbital width and length of premaxillary pedicels, proportions of parts of head alike in both species:- length of snout 29-36% length of head; diameter of eye 23-29; depth of preorbital 16-0-22-5, always smal'er than eye; length of lower jaw 35-39. Microbranchiospines present on outer sides of 2nd, 3rd, and 4th Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). London : BM(NH)
Size: 1948px × 1282px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
