140 AMEKICAN FOSSIL BKYOZOA. [bull. 173. 



had been a bone of contention for many years, the author gives brief diagnoses of 

 most of the Paleozoic genera hitherto known and proposes the new genera Eridopora, 

 Leioclema, Scenellopora, Mitoclema, Arthronema, Graptodictya, Arthropora, Dicra- 

 nopora, Stictoporella, Ehinidictya, Cystodictya, Pachydictya, Phyllodictya, Amplexo- 

 pora, Batostomella, Calloporella, Aspidopora, Dekayella, Petigopora, Discotrypn, Spa- 

 tiopora, Didymopora, Ceramoporella, Cheiloporella, Crepipora. Then are described 

 a large number of new species (81). The descriptions are full and accurate; com- 

 parisons with related species and often critical notes are given. A new suborder, the 

 Trepostomata, is founded. 



White, C. A. Viiii Cleve's fossil corals. (Indiana, Department of 

 Geology and Nat. Hist., Eleventh Ann. Rep.. 18S2, pp. 376-401, 

 pis. xliv-lv.) 

 Contains descriptions of Constellaria antheloidea Hall, Monticulipora frondosa 



d'Orbigny, and Clathropora frondosa Hall. 



* Whitfield, R. P. Paleontology. (Geology of Wisconsin, IV. 1882, 



pp. 163-319, pis. i-xxvii.) 



Contains descriptions of the following species: Chsetetes fusiformis, ^lonticulipora 

 rectangularis, punctata, multituberculata, ? Ortoni, Alveolites irregularis, Fenestella 

 granulosa, Stictopora fragilis, Trematopora granulata, annulifera, Fistulipora solidis- 

 sima, rugosa, lens, Constellaria polystomella. 



Whitfield, R. P. Descriptions of new species of fossils from Ohio. 



(Annals New York Acad. Sci., II, 1882, pp. 193-211:.) 



Describes Synocladia rectistyla. 



1883. 



* Claypole, E. W. On Helicopora. a new spiral genus (with three 



species) of North American Fenestellids. (Quar. Jour. Geol. Soc. 



London, XXXIX, 1883, pp. 30-38, pi. iv.) 

 Gives a description of Helicopora n. gen. with three new species — H. latispiralis, 

 Ulrichii, and archimediformis, and a brief discussion of the family Fenestellidte, to 

 which the new genus is referred by the author. 



* Foord, A. H. Contributions to the micro-paleontology of the 



Cambro-Silurian rocks of Canada. (Geol. Nat. Hist. Survey Can- 

 ada, Ottawa, 1883. 26 pp., T pis.) 

 The writer gives a good account of monticuliporoids from Ordovician strata of Can- 

 ada. The species were studied according to modern methods and the details of 

 internal structure are well described and figured. The new species are Monticuli- 

 pora Westoni, Billingsi, Homotrypa similis, Prasopora oculata, affinis, Diplotrypa 

 regularis, Amplexopora superba, Canadensis, Batostoma Ottawaense, Spatiopoi'a 

 areolata. 



Hall, James. Van Cleve's fossil corals. (Indiana, Department Geol- 

 ogy and Nat. Hist., Twelfth Ann. Rep., 1883, pp. 239-270, pis. 

 i-xiv.) 

 In this volume are reproduced a number of plates of western fossils, drawn and 

 engraved by John W. Van Cleve previous to 1853. The publication of the work was 

 prevented by the author's death. The bryozoa, derived from the Cincinnati and 

 Clinton groups, are identified by Professor Hall. The new species are Ptilodictya 

 bipmictata, Stictopora compressa, bifurcata, and Van Clevii. 



