Mr. W. Shone on some Boulder-clay Foraminifera, fyc. 153 



there is no overlapping of these plates in the other genera referred 

 to this group, it includes two types of structure. The author then 

 discussed the characters presented hy the test in the genera of the 

 Perischoechinidae (namely ArcJiceocidaris, Palcechinus, Perischodomus, 

 Lepidechinus, Eocidaris, Melonites, and Oligoporus'), and pointed 

 out that although we have no conclusive evidence of the presence of 

 membranous interspaces along with the overlapping plates in 

 Archceocidaris, the fragmentary condition in which the remains of 

 that form are usually found would lead us to infer their existence. 

 No known palaeozoic genus exhibits the want of distinction between 

 the ambulacra and interambulacra on the ventral half of the test 

 seen in the recent genus Phormosoma. In Melonites and Oligoporus 

 the author described an increase in the number of rows of plates in 

 the ambulacra, and he indicated that all the Perischoechinidae differ 

 from the later Echini by the increased number of perforations in 

 the ocular and genital plates. 



2. " On the discovery of Foraminifera &c. in the Boulder-clays of 

 Cheshire." By William Shone, Esq., jun. 



In this paper the author described the occurrence of Foraminifera, 

 Entomostraca, and some other small organic bodies in the Boulder- 

 clay at Newton by Chester and at Dawpool. They were found 

 partly in the interior of specimens of Turritella terebra, a^ d partly 

 free in the„ Boulder-clay ; but those obtained from the Turritellce 

 were in better condition than the others. The Foraminifera gene- 

 rally agree precisely with those found in the tidal parts of the river 

 Dee. The author stated further that the Turritellce containing 

 Foraminifera are filled with a fine greyish-white sand, in which 

 the minute fossils abound ; and he discussed the probable conditions 

 under which the deposit containing them had been formed. 



3. " On the occurrence of a Tremadoc area near the Wrekin in 

 South Shropshire, with description of a new Fauna." By Charles 

 Callaway, Esq., M.A., B.Sc, &c. 



The author stated that in an exposure of light-green micaceous 

 shales dipping south-east at 50° at Shineton near Cressage, which 

 are represented as of Caradoc age in the Geological-Survey Map, he 

 found a series of Trilobites and other fossils which induced him to 

 regard these Shineton shales as belonging to the Lower Tremadoc 

 series. He described as new species Asaphus Bos, Conocoryphe 

 Salteri, C. angulifrons, Platypeltis Croftii, Conojohrys salopiensis, 

 Lichapyge cuspidata, Lingulella Nicholsoni, Metoptoma Sabrince, 

 and Theca lineata. The author regarded these shales as the equi- 

 valents of beds containing Dictyonema found near Malvern and at 

 Pedwardine. 



