INVERTEBBATA. 311 



A list of fossils from a soft yellow fine-grained sandstone found near 



Giessen. It is a marine deposit in the upper part of the Spirifer- 



sandstono, rich in trilobites and polypes. Three species of Pleurodictijum 



are found here, viz. P. prohlematicum^ P. Petni, and a new species 



figured but not named. . F. W. R. 



Mayer, C. Description de Coquilles fossiles des terrains tertiaires 



superieurs (suite). [Descriptions of fossil shells from the Upper 



Tertiaries.] Joum. Conch. 3 ser. t. iiv. pp. 308-316, pi. xi. 



A continuation of a series of articles descriptive of Tertiary shells : — 



Tomatella attenuata, Lower Blue Marls of Bacedasco, near Piacenza ; 



T, Woodi (near T. Levidensis), yellow sands of CastelF Arquato ; 



Cyliclma tomata (near C. [BuUcc] Regidhiensis), Upper Blue Marls of 



the Piacenza district ; Bulla Weinkauffi, Upper Blue Marls of Luga- 



gnano, near Piacenza ; Trochus Castrensis, Castell' Arquato, perhaps 



only a variety of T. Adriaticus ; T. cuyentaniis, intermediate betweefi 



T. magm and T. BucJd^ Lower Blue Asti Marls of Bacedasco ; 



T. laureatiis = T. granulaUcSy var. polygoiudis. Upper Astian of Castell' 



Arquato ; T. Pauhiccice (near 2\ millegranus), Bacedasco ; Murea> 



pagodida, Lugagnano ; M. turhiniformis, same locality. C. P. G. 



Meek, Prof. F. B. Notes on some of the fossils figured in the 



recently issued fifth volume of the Illinois State Geological 



Keport. Amer. Joum. ser. 3, pp. 189-193, 369-379, 484-490, 



580-584, pi. vii. 



Notes on various species of Crinoids, &c. The view is advanced 



that the tube or proboscis of the Palaeozoic Crinoids was entirely anal 



in its functions, and not oral ; the mouth is supposed to be central, at 



the radial point of the ambulacra, but " covered over by a vault of 



fixed solid calcareous pieces " [p. 374.] It is explained that some of 



the names on the plates escaped revision through the author's illness : 



e. g. Schizodus llossiciis (Vern.) is perhaps wrongly so named. The 



author considers that Prof. Geinitz's " Dyas " in Nebraska cannot be 



separated from the Carboniferous. E. B. T. 



Meyj^, L. Silurische Schwiimme und deren eigenthiimliche Yerbrei- 



tung, ein Beitrag zur Kunde der Geschiebc. [Silurian Sponges.] 



Zeitsch. deutsch. geol. Gesell. Bd. xxvi. Heft. 1, pp. 41-58. 



Regards certain chalcedonic pebbles from the Isle of Sylt as remains 



of Silurian sponges. Believes that free-living sponges were numerous 



in Palaeozoic times, and that many so-caUcd pebbles owe their form not 



to attrition, but to the original sponge which they represent. Suggests 



that the brown pebbles formerly imported to Kiel from England, and 



known as " Wallsteine," are such silicified sponges. F. W. R. 



Miller, S. A. The Column of Heterocrinus heterodactylus. Cincin. 



Quart. Joum. Sci. vol. i. pp. 2, 3. 

 Description of the stmcturo of the column of this Crinoid, as observed 

 in spfecimens from the Cincinnati group. 



. " Pasceolus.'* Cincin. Quart. Joura. of Sci. vol. i. pp. 4-7, 



figs. 1-3. 



