150 Miscellaneous. fact that none are mentioned in Mr. Jukes-Browne's list of the fossils (Quart. Journ. Geol, Soc. xxxi. p. 305), the author proceeded to explain the circumstances under which he had been entrusted with the whole of Mr. T. Jesson's collection from the coprolite-bed for description. The collection is large and important, and the Polyzoa contained exhibit a facies distinct from that of the Jurassic beds on the one hand and of the Upper Chalk on the other. There is but little similarity between the collection now described and the forms known from Warminster and Farringdon. The majority of the Cambridge-Greensand Polyzoa occurred unattached to any matrix ; but several examples of attachment have been observed, chiefly to Ostrea, Radiolites, and species of Gidaris. A list showing the range of the species described preceded the actual descriptions of the following kinds of Polyzoa and Forami-nifera, with notes on their relations &c. It included : — Polyzoa. Sfomatopora gracilis, Milne-Edw. Lichenopora, sp. Idmonea dorsata, Hagencw. ? paucipora, Vine. Entalopliora raripora, U Orb. Dromopora stellata, Gold/uss. Jessonii, sp. nor. polytaxis, Hagenow. striatopora, sp. nov. Osculipora plebeia, Novall. gigantopora, sp, nov. Truncatula, sp. Diastopora cretacea. Vine. Membranipora cantabrigiensis, sp. •, var. lineata, var. nov. nov. fecunda, sp. nov. Microporella, sp. (? antiquata). megalopoi-a, sp. nov. Lunularia cretacea, I)efr. 8f VOrb. FOEAMINIFEEA. Webbina laevis, Sollas. Trochammina irregularis?, If Orb. tuberciilata, Sollas. Textularia, sp. MISCELLANEOUS. Oti the Existence of a Nervous System in the Accelous Planarice and of a new Sense-organ in Convoluta Schultzii. By M. Yves Delage. There are in the animal kingdom a small number of creatures with differentiated tissues in which no nervous system has been recog-nized. Nevertheless the well-known existence in them of sense-organs almost enables us to assert a priori that of ganglionic cells and of nerves. Among these creatures are the lowest Planarise inclu-ded in the group of the Accelous Rhabdocoela. In the most recent and the most authoritative work upon this subject, that of L. Graff, these Planarise are described as having no nervous system. Never-theless a Russian zoologist, Mile. Pereyaslawzew, speaking inciden-
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