Abstract
The Quarterly Journal of Microscopical Science for January, 1894, contains observations on the development of the head in Gobius capito, by H. B. Pollard. (Plates 21 and 22.) The stages of development of the brain, mouth, and mesodermal structures are described. The work was carried out during the occupation of the Oxford table at the Naples Zoological Station.—On the head kidney of Myxine glutinosa, by J. W. Kirkaldy. (Plate 23.) It would seem that the pronephros in Myxine may be regarded as a stage in the phylogenetic reduction of this organ—a reduction which continues in the Pisces until the tubular structure entirely disappears, and, further, that it represents in Myxine the mesoblastic part of the supra-renal bodies.—Report on a collection of Amphioxus made by Prof. A. C. Haddon in Torres Straits, 1888–89, bv Arthur Willey. All the specimens belonged to the same species, Epigonichthys cultettus, Peters. One of the most remarkable features in its internal organisation is the fact that the gonads occur as a unilateral series of pouches confined to the right side of the body; in connection with this fact the author adds, that often in the Mediterranean form the gonadic pouches of the right side preponderate greatly over those of the left side in number.—On the orientation of the frog's egg, by Dr. T. II. Morgan and Umé Tsuda. (Plates 24 and 25.)—On the fossil Mammalia from the Stonesfield Slate, by E. S. Goodrich. (Plate 26.) In this excellent account of these very interesting fossils, we have detailed descriptions and figures of Amphitherium Prevostii, Blainv,A. Oweni, Osborn,Phascolothermm Bucklandi, Broderip, and Amphilestes Broderipii, Owen. The only specimen of Stereognathus ooliticus,, Charles worth, was in too fragmentary a state to be re-described. In a foot-note Prof. E. Ray Lankester gives some graphic reminiscences of another Stones-field fossil, probably belonging to another species of Stereognathus which was once in his possession.—On a Polynoid with branchiæ (Eupolyodontes Cornishii), by Florence Buchanan. (Plate 27.) This species was found off the mouth of the river Congo by Mr. Cornish, of the cable ship Mirror; a list of the species belonging to the sub-family Acöetidæ is given, and the new species with Polyodontes gulo, Grube, are placed in the new genus Eupolyodontes.—On some Bipinnariæ from the English Channel, by Walter Garstang. (Plate 28.)—On Octineon Lindahli (W. B. Carpenter), an undescribed Anthozoon of novel structure, by Dr. G. Herbert Fowler. (Plates 29 and 30.) This remarkable form was dredged in 1870 during the Porcupine expedition off the south coast of Spain, not far from Cape St. Vincent, in 364 fathoms of water. It was to have been described by Dr. W. B. Carpenter, who died before doing so; the specimens were then entrusted to Prof. Moseley, who was unable to finish the work before his death; now we have the memoir completed by Dr. Fowler. In a dead condition the animal presents the form of a thin sandy disc, not exceeding 0˙4 of an inch in diameter. “In Octineon we have an Actinarian with the characteristic habit of a Zoanthid, with the twelve mesenteries of a Hexactinian, and the eight muscles of an Edwardsid,” and the evidence seems in favour of the view that it is the type of a new and highly specialised family, descended from true Hexactinian ancestors.
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Scientific Serials. Nature 49, 423–424 (1894). https://doi.org/10.1038/049423a0
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DOI: https://doi.org/10.1038/049423a0