. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. PRELIMINARY DESCRIPTIONS OF SOME JAPANESE TRICLADS. 159 Locality :—Lake Biwa, on muddy bottom at a depth of 30-45 fathoms. Collected by Dr. N. Annandale and Mr. T. Kawamura, Oct. 1915. 5. Btlellocephala brunnea, n. sp. Woodcuts 9—11. Body moderately large, rather slender. Head indistinctly marked off from trunk by a gentle neck-like narrowing of body. Frontal margin crenate ; median lobe weakly arched, thrown into some adhesive folds on the inferiorly turned swollen edge (wood- cut 10) ; behind that edge a groove-like depression p
. Annotationes zoologicae japonenses / Nihon do?butsugaku iho?. PRELIMINARY DESCRIPTIONS OF SOME JAPANESE TRICLADS. 159 Locality :—Lake Biwa, on muddy bottom at a depth of 30-45 fathoms. Collected by Dr. N. Annandale and Mr. T. Kawamura, Oct. 1915. 5. Btlellocephala brunnea, n. sp. Woodcuts 9—11. Body moderately large, rather slender. Head indistinctly marked off from trunk by a gentle neck-like narrowing of body. Frontal margin crenate ; median lobe weakly arched, thrown into some adhesive folds on the inferiorly turned swollen edge (wood- cut 10) ; behind that edge a groove-like depression present ; lateral lobes but little projecting. Breadth of frontal margin in the creeping state of the worm, less than half the greatest breadth of trunk. Trunk dor- sally convex, ventral- iy flat, very gradually broadening posterior- ly from neck to about the region of sexual organs ; posterior extremity of body rather rounded. Body in the creeping state commonly 20-26 mm. long and 3-4 mm. broad ; ratio of breadth and length I : 5-6^. Color of body olive-brown, sometimes blackish, velvety; the parts containing guts usually darker than elsewhere. Eyes two, each surrounded by a white space ; distance between them about twice as long as that between either of them and the nearest point in the front margin or that in the lateral head 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 Nihon Do?butsu Gakkai; To?kyo? Do?butsu Gakkai. Tokyo : Societas
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Keywords: ., bookcentury1800, bookcollectionbiod, bookdecade1890, bookyear1897
