. Bulletin of the British Museum (Natural History) Zoology. Pseudoceros velutinus, dorsal surface of body in life. that found in the specimen from Inhaca I. Dorsally, the ground-colour of the Japanese form is, however, milky white with three black bands disposed as in P. tristriatus and with a black band around the body. This close resemblance in the disposition of markings in three forms from widely-separated areas, suggests that the importance of coloration in species of Pseudoceros, as implied by its numerous species known only on one specimen, might not be so diagnostically valuable
. Bulletin of the British Museum (Natural History) Zoology. Pseudoceros velutinus, dorsal surface of body in life. that found in the specimen from Inhaca I. Dorsally, the ground-colour of the Japanese form is, however, milky white with three black bands disposed as in P. tristriatus and with a black band around the body. This close resemblance in the disposition of markings in three forms from widely-separated areas, suggests that the importance of coloration in species of Pseudoceros, as implied by its numerous species known only on one specimen, might not be so diagnostically valuable for specific determination. Another point of interest is that Pseudoceros tristriatus has only one male copulatory complex, whereas P. gratus has two, again casting suspicion on the validity of considering the number of male complexes as a diagnostic feature among species of Pseudoceros. Pseudoceros variegatus Locality. Opposite Marine Biol. Stat., Inhaca I. bique, 11 July 1961 (V. Gabie leg.) Mozam- Description. No specimen available, but a water-colour painting of the living worm, shows the body to be broadly oval and measuring about 25 mm long and 20 mm wide. According to the painting, the ground-colour of the dorsal surface is reddish brown, with a thin marginal band of dark brown around the body. This surface also bears pale pink elongate patches and a median whitish band extending for almost the length of the body. Ventral surface pinkish. No further information available. mm. The dorsal surface is velvety bluish black with a marginal band of purple and has a small colourless area over the rounded cluster of cerebral eyes. This colourless area appears to be specific. Pseudoceros vinosus Meixner, 1907 Locality. Entedebir, Eritrea, March 1962 (from H. Steinitz colln.) Originally recorded from under stones in shallow water near Obock on the Clochetterie Reef in Gulf of Tadjourrah, Djibouti (Meixner, 1907). Description. Meixner, 1907:470. Three specimens from Entedeb
Size: 2044px × 1222px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
