lOO BIBLIOGRAPHY OF 1 87 7. 



Cash (William, F.G.S.) — Notes on carboniferous Cepha- 

 lopoda. — Part T., Recent Cephalopoda. — Extract from 

 Proc. Geol. and Polyt. Soc. West Riding of Yorkshire, 1877, 

 new series, vol. i., 23 pages and plate xi. 



The author having taken up the study of fossil Cephalopoda 

 has in this paper prefaced his account by a sketch of the general 

 organization and classification of the recent species, their distri- 

 bution and phylogeny. 



Dall (W. H.)— On Alaskan Brachiopoda. — Reports on the 

 Brachiopoda of Alaska and the adjacent shores of Northwest 

 America). — Article III. of the Scientific Results of the 

 Exploration of Alaska, June, 1877, pp. 45 to 62, also Proc. 

 Ac. Nat. Sci. Phil., 1877, pp. 155 to 170. 



The distribution, &c., of the 10 Alaskan species is duly 

 noted and synonymy given. The author then points out that 

 species of Magasella appear to co-exist with other species of the 

 group which they to some extent resemble. He discusses this 

 subject from various points of view, rejects the notion that the 

 Magasellce are young of the other species, and finally concludes 

 in favour of a modified evolutional view, accepting the idea that 

 species are sometimes modified suddenly 



Dall (W. H.) — Index of Names of Brachiopoda. — Index 

 of names applied to the class, orders, tribes, families, genera, 

 subgenera, and sections of the Brachiopoda (excluding the 

 Rudistes) previous to the year 1877. — Bulletin of the U. S. 

 Nat. Museum, No. 8, 1877, 88 pages. 



The index of names arranged alphabetically and with full 



references and dates, forms the principal part of the paper. 



This is followed by a systematic list of the genera, a list of the 



species described by Linuceus and their modern equivalents, and 



a table showing approximately the known distribution of the chief 



groups of Brachiopoda in geological time. 



