OF CONCHOLOOT. 201 



NOTICES AND REVIEWS 



OF 



NEW CONCHOLOGICAL WORKS. 



BY GEO. W. TRYON, JR. 



I.— AMERICAN. 



Report on the Brachiopoda obtained by the United States Coast 

 Survey Expedition, -with a Revision of the Craniidee and Dlscin- 

 ldae. By W. H. Dall. (Bulletin of the Museum of Comparative Zoology, 

 Cambridge, Mass., Vol. Ill, No. 1, 1871,) pp 45 *nd 2 plates. 



The classification of the Terebratulidre adopted in this paper 

 corresponds with that of the author's recent article on this 

 family contributed to this Journal. To this is now added 

 studies of the Craniidge and Discinidse, and the descriptions 

 and distinctive characters of all the species collected bj the 

 survey, together with very complete synonymical tables. 



Craniopsis, Dall, s. g. nov. Discinisca, Dall, s. g. nov. 



of Crania. of Discina. 



Craniscus, Dall, nov. gen, 



Memoirs of the Boston Society of Natural History. Vol. IT, Part 1, 

 No. II. 



On the early stages of Terebratulina septentrionalis. By 

 Edw. S. Morse. 4to, 12 pp., with 2 steel plates. Bos- 

 ton, 1871. 



The author remarks that while the anatomy and histology of 

 the adult Brachiopods have been carefully studied, comparatively 

 little is known concerning the earlv stages of the class. His 

 memoir is therefore a contribution to conchological science of 



