. Bulletin of the British Museum (Natural History). Zoology . 62 P. H. GREENWOOD. Fig. 34. Neurocranial and lower jaw form in insectivorous Haplochromis species. (Scale = 3 mm.) Virtually identical syncranial morphology and dentition are found in H. chromo- gynos (Text-figs 32 and 33), but the lips are not hypertrophied in this species ; adult fishes are apparently smaller (maximum length 110 mm) than in H. chilotes. I would consider H. chilotes and H. chromogynos to be sister species, with H. chilotes the derived (apomorph) member of the pair. Similarly specialized skull and jaw
. Bulletin of the British Museum (Natural History). Zoology . 62 P. H. GREENWOOD. Fig. 34. Neurocranial and lower jaw form in insectivorous Haplochromis species. (Scale = 3 mm.) Virtually identical syncranial morphology and dentition are found in H. chromo- gynos (Text-figs 32 and 33), but the lips are not hypertrophied in this species ; adult fishes are apparently smaller (maximum length 110 mm) than in H. chilotes. I would consider H. chilotes and H. chromogynos to be sister species, with H. chilotes the derived (apomorph) member of the pair. Similarly specialized skull and jaw forms and outer tooth morphology are seen in one lineage of mollusc eaters, and it is thought that H. chilotes and H. chromogynos are members of the same lineage (see p. 72, and Text-fig. 66). Finally in the insectivorous group there is Haplochromis empodisma, a species which could be described as a deep-bodied and larger form of the five species described first. 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)
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