NICKLES AND BAS.S1.KK.] BIBLIOGKAPHY. 147 



Whiteaves, J. F. Contributions to Canudiaii Paleontology, Vol- 

 ume I. Part III. The fossils of the Devonian rocks of the 

 Mackenzie River Basin, ((xeol. Nat. Hist. Sur. Canada, 1891, 

 pp. 197-258, pis. xxvii-xxxii.) 

 Contains the following new ypecies: Proboscina laxa, Stomatopora moniliformis, 



Monotry})ella Unjiga. 



1892. 



Ami, Henry M. Notes and descriptions of some new or hitherto 

 unrecorded species of fossils from the Cambro-Silurian (Ordovi- 

 cian) Kocks of the Province of Quebec. (Canadian Record of Sci- 

 ence, V, 1892, pp. 96-103.) 

 Contains descriptions of Dicranopora parva, n. sp. ; Prasopora lycoperdon Van- 

 uxem, var. Selwyni, n. var. ; Diplotrypa Quebecensis, n. sp. ; Monotrypa incerta, 

 n. sp. It is doubtful whether any of these, except Diplotrypa Quebecensis, which 

 has since been redescribed and figured by Ulrich, will gain recognition. 



Rominger, Carl. On the occurrence of typical Chsetetes in the Devo- 

 nian strata at the Falls of the Ohio, and likewise in the analogous 

 beds of the Eifel in Germany. (American Geologist, X, 1892, 



pp. 56-63, pi. iii.) 

 A general discussion with figures and some description of Monotrypa tenuis Hall, 

 Chfetetes ponderosus Rominger, and two species not bryozoans. 



1893. 



Cole, G-renville, A. J. On Hemitrypa hibernica McCoy. (Scientific 

 Proceedings of the Royal Dublin Society, (n. s.) VIII, 1893, pp. 

 132-lty:, pi. viii.) 

 The author gives an admirable account of the history of the genus Hemitrypa, 



whose structure he apprehends correctly. The article contains numerous references 



to American work and American species. 



* James, Joseph F. Manual of the paleontology of the Cincinnati 



group. (Jour. Cincinnati Soc. Nat. Hist. 1893-1896. Part IV in 



Vol. XV, 1893, pp. 141-169; Part V in Vol. XVI, 1891, pp. 178- 



208; [Part VI] in Vol. XVIII, 1895, pp. 67-88; [Part VII] in Vol. 



XVIII, 1896, pp. 115-110.) 



Descriptions are given of the species of monticuliporoids of the Cincinnati group 



which the author considered valid, and those which he considered synonyms are 



referred to the species of which he considered them synonyms. The work, which is 



rather iconoclastic, was left unfinished by the death of the author. 



* Ulrich, E. O. On Lower Silurian Bryozoa of Minnesota (Geology 



of Minnesota, III, Part I, Minneapolis, 1893, pp. 96-332, i)ls. 

 i-xxviii.) 



Next to the memoir in the Geological Survey of Illinois, VIII, 1890, this is the 

 most important w ork on the Paleozoic Bryozoa, even though it deals mainly with the 

 Trenton of Minnesota. The classification given in the Illinois work is improved in 

 some particulars. The descriptive part contains 157 species, many of them new, 

 referred to 50 genera. 



