INVEETEBBATA. , 331 



Cypriearditesferrugineuyn, Pleurofomaria ineocpectans, Orihoceras Jamesi, 

 and Illcenus Daytonensis. From the Niagara formation, in addition to 

 previously recorded species, are described as new — InocauUs bella, 

 Receptaculites Ohioensis, Platycrinus prcematurus. Saccocrhius ornatus^ 

 Pentremites subcylindrica, Monomerella Netuherryi, lihynchonella pisa, 

 Pentamerus pergihhosus, Amphicoslia (Leptodo77ius ?) costata, SuhuliUs 

 terebriformis, Straparollus Niagarensis, Tremanotus ? trigonostoma, Or- 

 tJioceras strix, Cyrtoceras myrice, G. Hertzeri, Phragmoceras parvurn^ 

 P. ellipticum, and Encrinurus ornatus. In the next part two new 

 Crinoids are described — Melocrinus (Ctenocrinus) Bainbridgensis, from 

 beds supposed to be equivalent to the Genesee ^Isites, and Platycrinus Bed- 

 foYdensis, from strata supposed to correspond to the Chemung or Portage 

 Group of New York. Finallj^, a number of Crinoids are described from 

 the Waverly Group, the new species being Platycrinus Richfieldensis 

 and P. Lodensis. 



Prof. H. A. Nicholson. Description of the Corals of the Silurian 

 and Devonian Systems, pp. 181-242, pis. xxi -xxiii. The first part 

 is a description of the corals of the Cincinnati Formation. In addition 

 to a number of previously recorded forms, the following are described 

 as new — Chcetetes subpidchellus, 0. briareus, C. sigillarioides, C. JVeiu- 

 berryi, C. petecJiialis, Constellaria polystomella, and Palceophyllum di- 

 varicans. From the Clinton Formation six corals are described, of 

 which Acervidaria Clintonensis is new. From the Niagara Formation 

 the only species recorded is Favosites favosa. From the Corniferous 

 Limestone, in addition to species formerly known, there are described 

 as new — Favosites j^leicrodictyoides, F. invaginata, Zaphrentis Edwardsi, 

 Z. Wortheni, and Z. multilamellata. 



Prof. H. A. Nicholson. Descriptions of Amorphozoa from the Silurian 

 and Devonian Formations, pp. 243-255, pi. xxiv. Treats first of the genus 

 Strotnatopora, of which S. ponderosa, S. sid)Striatella, and S. nodulata 

 are described as new species from the Corniferous Limestone. Syringo- 

 stroma^SbBGW genus, or perhaps a subgenus, of Stromatopora, ia described. 

 The fossils of this group, though closely allied to Stromatopora, are dis- 

 tinguished by the density of their laminated tissue and the presence of 

 horizontal tubes running parallel with the surface. Two species are 

 described, S. densa and S. columnaris, both from the Corniferous Lime- 

 stone. Lastly, the genus Pictyostroma, possibly also a subgenus of 

 Stro7natopora, is founded for the reception of a single species, P. undu- 

 lata, from the Niagara Limestone of Kentucky. 



. Descriptions of Polyzoa from the Silurian Formation, pp. 



257-268, pi. XXV. 5 species of Ptilodictya, 1 of Ceramopora, 3 of 

 Alecto, and 1 of Hippothoa^ from the Cincinnati Group of Ohio, are 

 described ; but all are previously recorded forms. A species of Fenestella 

 is described from the Niagara Formation. 



Prof. F. B. Meek. A Eeport on some of the Invertebrate Fossils of 

 the "Waverly Group and Coal Measures of Ohio, pp. 269-347, pis. x., 

 xiii. (figs. 2-4 exclus.), and xiv.-xx. The first part deals with 

 the fossils of the Waverly Group. In addition to a large number of 



