| OCR Text |
Show 1903.] FROM ZANZIBAR AND BRITISH EAST AFRICA. Ill but, I think, sufficiently distinguished by its much smaller size and yellow instead of red stripes. I have accordingly ventured to describe it as a new species, partly on account of the above-mentioned differences and partly on account of its different habitat. The genital organs, which are those of a typical Cestoplana, are not fully mature, but are at the same time sufficiently advanced to lead one to suppose that the specimen will not increase very largely in size. Unfortunately the head of the only specimen has been damaged, so that it is not possible to determine the arrangement of the eye-spots. OMMATOPLANA TUBERCULATA, gen. et sp. nov. (Plate IX. figs. 5-7.) One specimen, immature. "Prison Island, 4.6.01. White, about 1 in. long, stiff and almost harsh to the touch when alive." Length 26 mm. Breadth 14 „ " Mouth" from anterior end... 13'5 ,, d aperture from "mouth" ... "75 ,, 2 aperture ? ? The stiff texture of the specimen noted by Mr. Crossland is very obvious in the spirit specimen, and is due to the presence of large numbers of muscular wait-like projections on the dorsal surface. The eye-spots are numerous and lie scattered over the anterior part of the dorsal surface. Their arrangement is shown in text-figure 7. Text-fig. 7. Anterior end of Ommatoplana tuberculata, sp. nov., to show the arrangement of the eye-spots. The epithelium on both dorsal and ventral surfaces contains very numerous pseudorhabdites which stain deeply. Below the |
