280 PALEONTOLOGY. 



The variability in shape of Nuhecularia novorossica, n. sp., abundant 

 at Kischeneff, Bessarabia, &c., is seen to be dependent on the objects 

 round which they have grown ; three chief forms of this species are 

 described and illustrated — the solitary or simplest form, the nodular 

 type, and the irregular or acervuline type. E. B. T. 



Kawall, J. H. Organische Einschliisse im Bergkrystall. [Organisms 

 in Rock-Crystal.] Bull. Soc. Imp. Nat. Mosc. t. li. pp. 170-173. 

 Describes a larva-like body as Tineites crystalli. 



Kayser, Dr. E. Ueber primordiale und untersilurische Fossilien aus 

 der Argentinischen Eepublik. [Cambrian Fossils from the Argen- 

 tine Ilepublic] Palceontographica, Suppl. iii. Lief. 2, pp. 1-33, 

 tab. 1-5. 

 (1) From the sandstones of Provinces Salta and Jujuy 6 species are 

 described, besides Theca, Agnostus, Obolus, &c., indeterminable ; these 

 are U. Primordial. The new species are Agnostus Tilcuyensis, Olefins 

 argentinus, Arionellus Lorentzi^ A. Hieronimi, Orthis Saltensis. (2) 

 From the limestone formation of hills E. of the Cordilleras of San Juan 

 14 species are named, besides a few indeterminable ; this is paralleled 

 with Llandeilo beds. The new species from here are Bathyurus La- 

 jensis, B. Darwinii, B. Orbignyanus, Arethusina argentina^Monticulipo^^a 

 argentina^ Maclurea Avellanedce, M. Sarmienti, M. Stelznen, Slropho- 

 mena Talacastrensis, Leptcena Stelzneri. (3) From the E. slopes of the 

 Famatina range 6 species are cited, all of European or N. American 

 occurrence previously ; the age is very little younger than the preceding. 

 Both the primordial and other Cambrian beds show an affinity in fauna 

 to those of N. Europe rather than to the Bohemian. E. B. T. 



Keeping, Walter. Notes on the Palaeozoic Echini. Quart. Joum. 

 Geol. Soc. vol. xxxii. pp. 35-42, pi. iii. 



Shows that the interambulacral and ambulacral areas of Perischodo- 

 m us are composed of overlapping plates ; so that the genus becomes 

 closely allied to LepidecJiinus. The new genus Ehoechinus is founded 

 for the reception of a Carboniferous urchin allied to Perischodomus and 

 LepidecTiinus, but with no primary tubercles, the single species being 

 termed R. irregidaris. Another Carboniferous urchin is doubtfully 

 referred to Palcechinus (P. ? intermedius), the overlapping plates not 

 being thin and extensively imbricated as in Perischodomus, but thick 

 and simply bevelled off at their edges. Some points in the anatomy of 

 Palcechinus gigas, P. sphcericus, and Archceocidaris Urii are elucidated. 

 The author remarks upon the systematic value of the Perischoechinidae, 

 and appends an outline classification of the Eehinoidea. H. A. N. 



. On the Discovery of Melonites in Britain. Quart. Joum, 



Geol. Soc. vol. xxxii. pp. 395-399, figs. 1-6. 

 Kecords the first occurrence in Britain of this American genus. A 

 large species, M. Efheridgei, is described from the Carboniferous Lime- 



