. Bulletin of the British Museum (Natural History) Zoology. *?..: %% Fig. 19 Pseudoceros bifasciatus, cephalic region of body (dorsal view). body is bordered with two narrow bands, the outer being orange coloured, the inner white. The ground-colour in the median region of the body is deep purple, gradually fading to pale bluish green on reaching the white sub- marginal band. On each side of the median line, there is a broad lanceolate band of black. The ventral surface of the body is purplish. Marginal tentacles represented by a pair of folds of the anterior margin of the body; they bear the o
. Bulletin of the British Museum (Natural History) Zoology. *?..: %% Fig. 19 Pseudoceros bifasciatus, cephalic region of body (dorsal view). body is bordered with two narrow bands, the outer being orange coloured, the inner white. The ground-colour in the median region of the body is deep purple, gradually fading to pale bluish green on reaching the white sub- marginal band. On each side of the median line, there is a broad lanceolate band of black. The ventral surface of the body is purplish. Marginal tentacles represented by a pair of folds of the anterior margin of the body; they bear the orange and white marginal bands. Ventral sucker situated more or less centrally. Eyes occur in the anterior region of each tentacle and in the margin of the body between the tentacles. Cerebral eyes disposed dorsaily to cerebral organ and appear as a single cluster or in three ill-defined arcuate rows. Mouth in anterior fifth of body and opens into middle of short pharyngeal chamber enclosing a large pharynx with four pairs of deep lateral folds. Slender intestinal trunk extends to near hind end of body and gives off many pairs of lateral limbs, the branches of which anastomose profusely. Ventral testes and dorsal ovaries are widely distributed, but do not occur in the cerebral, tentacular and peripheral regions of the body. The copulatory organs were removed from a preserved specimen measuring 30 mm long and 20 mm wide and longitudinally sectioned. Unfortunately, the result- ing sections show the worm not to be fully developed. The single male complex is only partially developed, showing an elongate seminal vesicle lying posteriorly to the male pore, and a penis-papilla without a distinct stylet and enclosed in a penis-sheath. The prostate is little developed and gives no indication of its ultimate size in relation to that of the seminal vesicle. Closely posterior to the male complex in this speci- men lies a mass of gland-cells probably representing Anlagen of the female compl
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Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
