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Show 1 9 0 6 . ] ON AN UNKNOWN MARINE ANIMAL. 7 1 9 E XPLANATION OF PLATE L I I. Fig. 1. Zygantroplana verrilli, sp. n .: p. 709. Appearance of a specimen cleared in cedar-wood oil. X c. 15. 2. Longitudinal section of the same (diagrammatic). 3. Group of nematocyst-like structures from the dorsal epidermis of a specimen of Anonymus virilis (?): p. 712. X 500. 4. Transverse section across the body of Traunfelsia elongata (p. 714) at the level of the penis and accessory male glands (diagrammatic). X 50. 5. One of the accessory male glands more highly magnified. X 450. Explanation of lettering o f the Figures. acc.ves., accessory vesicle. a.m., antrum masculinum. ant., antrum. al., alveolus of gland. b.m., basement-membrane. hr., brain. cap., capsular cells. d., duct. d /, duct epithelium. f , threads of nematocysts. g., main gut. g.', gut-branches. gl., accessory male gland. glom., glomerulus. nem., nematocysts. nuc., nucleus of epidermal celL ov., ovary. ph., pharynx. sec., secretion of glomerulus. te., testis. ut., uterus. v.d. vas deferens, cf, penis. $ , external opening of vagina. 7. Description of an unknown Animal seen at Sea off the Coast of Brazil. By E. G. B. M e a d e -W a l d o , F.Z.S., and M i c h a e l J. N i c o l l , F.Z.S. [Received June 19, 1906.] (Text-figure 114.) The following are accounts of a large marine animal (text-fig. 114, p. 720) seen off the coast of Brazil, copied from the journals made by us during our cruise in the Earl of Crawford's yacht * The Valhalla ' :- " On Dec. 7tli, 1905, at 10.15 a .m ., I was on the poop of the 1 Valhalla ' w'ith Mr. Nicoll, when he drew my attention to an object in the sea about 100yards from the yacht; he said: ‘ Is that the fin of a great fish ? ' I looked and immediately saw a large fin or frill sticking out of the water, dark seaweed-brown in colour, somewhat crinkled at the edge. It was apparently about 6 feet in length and projected from 18 inches to 2 feet from the water. I could see, under the water to the rear of the frill, the shade of a considerable body. I got my field-glasses on to it (a powerful pair of Goerz Trieder), and almost as soon as I had them on the frill, a great head and neck rose out of the water in front of the frill; the neck did not touch the frill in the water, but came out of the water in front of it, at a distance of certainly not less than 18 inches, probably more. The neck appeared about the thickness of a slight man's body, and from 7 to 8 feet was out of the water ; head and neck were all about the same thickness. The head had a very turtle-like appearance, as had also the eye. I could see the line of the mouth, but we were sailing pretty P r o c . Z o o l . S o c .-1906, No. XLVIII. 48 |