. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. l'RELIM I NARY DESCRIPTIONS OF SOME JAPANESE TRICLADS. 155. 3. Procerodes trigonoccpliala, n. sp. Outline of body in the creeping state, about 16X. 4. Same. Diagram of sexual organs. at atrium, vd' common vas deferens, vs vesicula seminalis. Other letters as in woodcut 2. Large specimens in the creeping state 4 mm. long and I mm. broad ; commonly smaller. 3 4 Body translucent, gen- erally somewhat whitish ; frontal margin and the region of eyes darkish ; central region of head whit- ish ; alimentary tracts ap- pearing brownish, re
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. l'RELIM I NARY DESCRIPTIONS OF SOME JAPANESE TRICLADS. 155. 3. Procerodes trigonoccpliala, n. sp. Outline of body in the creeping state, about 16X. 4. Same. Diagram of sexual organs. at atrium, vd' common vas deferens, vs vesicula seminalis. Other letters as in woodcut 2. Large specimens in the creeping state 4 mm. long and I mm. broad ; commonly smaller. 3 4 Body translucent, gen- erally somewhat whitish ; frontal margin and the region of eyes darkish ; central region of head whit- ish ; alimentary tracts ap- pearing brownish, reddish or orange in color. Eyes two, small, each surrounded by a clear space, situated far behind anterior body-end, the distance being more than three times that between the eyes. The latter distance is about equal to one-half that between either eye and lateral body margin of the same side. Mouth at about the hind end of the middle third of body. Pharynx inserted a short distance behind the middle of body. Anterior gut trunk with 7-9 pairs of branches ; each posterior gut trunk with about 10 branches on both sides, those of inner sides being very short. Genital aperture situated half-way between mouth and posterior body- end. Atrium simple. Testes numerous, small, situated ventrally in body and arranged on both sides of lateral nerve-cords from close behind ovaries to insertion of pharynx, but farther behind only on the outer side of same, ceasing altogether to exist at about the level of mouth. Vasa deferentia uniting in penis bulb into a short common duct, which soon opens into moderately wide and smooth-walled vesicula seminalis; the latter narrowed inferiorly into ductus ejaculatorius terminating at tip of penis, which is of a conical shape and subvertically disposed. Ovaries two, lying ventrally between fourth and fifth pairs of gut branches. Oviducts of both sides. Please note that these images are extracted from scanned page images that may have been digitally enhanced
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
