30 GEOLOGICAL MEMOIES. 



lobular ornamentation characteristic of Ceratites. The first speci- 

 mens of Ohoristoceras MarsJii were brought to Yienna by Mr. 0. C. 

 Marsh, E.G.S., of Newhaven; subsequently Prof. Suess received a 

 greater number of them ; and lately Mr. Hinterhuber, an Imperial 

 Mining Engineer entrusted by the Imperial Geological Institute 

 with the task of examining the locality of the specimens found in 

 Austria, ascertained their occurrence in a stratum resting on un- 

 doubted Kossen strata and overlain by " Adneth " (Liassic) lime- 

 stones. Similar forms occur among the specimens referred to " Crio- 

 ceraSi " from the Bavarian Alps, described by MM, Giimbel and Schaf- 

 hautl ; but their determination must remain uncertain until their 

 lobular ornamentation becomes better known. [Count M.] 



On Eemai3n"S of the Maemot (Arctomys marmota, Omel.) in Styeia. 

 [Proceed. Imp. Acad. Vienna, Sth and 22nd March, 1866. 

 The remains of this animal, which has never been known in Styria, 

 as far as historical records or traditions go, consist of a jaw, found 

 at the junction of the Parschlug andMiirz valleys, among some inde- 

 terminable fragments of bones ; it was recognized as belonging to 

 the species in question by Prof. Hyrtl (see Imp. Geol. Instit., Annals, 

 xiv. 1864, Proceedings, p. 33). In the beginning of 1866, Prof. 

 Oscar Schmidt discovered again, in the neighbourhood of Gratz, 

 about two hundred feet above the river Mlirz, an old den of Mar- 

 mots, with the skeletons of four individuals, belonging to three 

 different generations. These animals must be supposed to have 

 lived in Styria during a portion of the Diluvial period, when the 

 extension of glaciers in the higher Alpine regions drove away the 

 Alpine flora and fauna to seek shelter and food in lower, and con- 

 sequently more congenial, regions. [Count M.] 



The Gasteeopods of St. Cassian. By Dr. Laube. 

 [Proceed. Imp. Acad. Vienna, May 11, 1865.] 

 The Gasteropod-fauna of St. Cassian possesses many species analogous 

 to forms found in the Carboniferous Limestone, and is particularly 

 interesting as being a " Limit-fauna," comi^rehending representatives 

 of a number of undoubtedly Palseozoic genera associated with others 

 whose full development took place afterwards in the course of the 

 Mesozoic Period ; and the number of species occurring also in other 

 localities is but small. The types of two new genera have lately been 

 discovered among the Pectinibranchiate Gasteropods of St. Cassian, 

 namely (1) Euclirysalis, having a chrysalid-like form, with smooth 

 whorls, long-slitted mouth, and very prominent lips, and (2) Pty- 

 chosfoma, resembling Pleurotoma by the peculiar slit on its mouth 

 and by the lines of growth taking the form of the letter V on the 

 sides of its smooth polished whorls. Dr. Laube describes 117 species, 

 among which 22 are ncAV. [Count M.] 



