. Bulletin of the British Museum (Natural History). igS P. H. GREENWOOD fins, except the pelvics, are hyaline-greyish, the soft dorsal is maculate posteriorly. The pelvics are dusky on the anterior half but hyaline posteriorly. Distyihution. Lakes Edward and George ; not yet recorded from the Kazinga Fig. 27. H. labiatiis. Dentary (anterior portion) with anterior and anterolateral teeth in situ (right side, viewed laterally); from the Lake George specimen. Scale = 0-5 mm. Comparison with the holotype. The holotype is a larger fish {109 mm standard length) and is from Lake Edward. The
. Bulletin of the British Museum (Natural History). igS P. H. GREENWOOD fins, except the pelvics, are hyaline-greyish, the soft dorsal is maculate posteriorly. The pelvics are dusky on the anterior half but hyaline posteriorly. Distyihution. Lakes Edward and George ; not yet recorded from the Kazinga Fig. 27. H. labiatiis. Dentary (anterior portion) with anterior and anterolateral teeth in situ (right side, viewed laterally); from the Lake George specimen. Scale = 0-5 mm. Comparison with the holotype. The holotype is a larger fish {109 mm standard length) and is from Lake Edward. The Lake George specimen differs from the holo- type in several minor ways, but in most details and in its overall morphology it resembles that specimen more closely than it does specimens of any other species. The principal morphometric difference is in the longer jaws of the Lake George fish (35-7 and 32-2 per cent of head, cf. 32-3 and 28-0 per cent for the upper and lower jaws respectively); such a difference, however, is well within the range of variation for these characters in other Haplochromis species. The lips of the holotype are clearly much better developed than are those of the Lake George specimen, and its teeth are predominantly unicuspid, not bicuspid as in the Lake George fish. However, some teeth in the holotype do show indications of a very small lateral cusp remnant. Both these differences could be attributable to the larger size of the holotype. Certainly the difference in lip development is well within the range of variation encountered in other species with hypertrophied lips and is not necessarily size-correlated. A further dental difference lies in the more clearly procumbent anterior teeth of the holotype. I am unable to comment on the sig- ficance of this character. Diagnosis and affinities. As only two specimens are available (and those from different lakes) it is difficult to provide a precise diagnosis. With so few specimens studied doubts might well
Size: 1705px × 1465px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorbritishmuseumnaturalhistory, bookcentury1900, bookcoll
