. Bulletin of the British Museum (Natural History) Zoology. about 100 such eyes present; cerebral eyes number about 25 arranged in an elongate cluster (). Pharynx with five pairs of lateral folds, individuals of which may bifurcate, hinder pair relatively long and partially embrace the male copulatory complex. Owing to the exces- sive flattening of the specimen it has not been possible to interpret the morphology of the copulatory organs satis- factorily, but a penis-stylet has been detected. An immature specimen from the northern waters of the Mozambique Channel appears to be a variant
. Bulletin of the British Museum (Natural History) Zoology. about 100 such eyes present; cerebral eyes number about 25 arranged in an elongate cluster (). Pharynx with five pairs of lateral folds, individuals of which may bifurcate, hinder pair relatively long and partially embrace the male copulatory complex. Owing to the exces- sive flattening of the specimen it has not been possible to interpret the morphology of the copulatory organs satis- factorily, but a penis-stylet has been detected. An immature specimen from the northern waters of the Mozambique Channel appears to be a variant of the southern form. According to a colour-transparency, its dorsal surface is orange in the marginal and submarginal zones and yellowish in the median field. There are also black transverse blotches in each lateral field (). A large median black patch lies immediately posterior to the anterior marginal tentacles and from this a very thin black line extends to posterior end of body. Genus PARAPSEUDOCEROS gen. no v. Definition. As Pseudoceros, but lacks tentacular eyes. With pair of precerebral ventral eyes. Type-species. Parapseudoceros dubius Parapseudoceros dubius Locality. In front of Marine Biol. Stat., Inhaca I., Mozambique, July 1958 (V. Gabie leg,) (holotype) and (paratype). Description (). This species is represented by two preserved specimens, both of which are in poor condition, having been excessively flattened to wafer thin at fixation and are now almost friable. Both specimens have, however, had their natural appearance recorded in a water-colour painting. Each is oval in outline, with a distinct median indentation on the anterior margin of the body. One living worm (holotype) was about 12 mm long and 6 mm wide. Its dorsal surface was blotched with colour varying from crimson to purple, with a darker median band, and irregularly mottled with a lighter colour. Ventral surface paler than the dorsal. Th
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Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
