INVEKTEBRATA. 285 



An anticipator}' account of the 14th part of the " Materiaux pour la 

 Carte Geologique de la Suisse." The new genus Psendoplacuna, and 

 the new subgenera Oncoma (Strombus), Harpoj^sis, and Silia (Harpa) 

 are founded. H. A. N. 



Mayer, Charles. Description de Coquillesi fossiles des terrains Ter- 

 tiaires superieurs (suite). [U. Tertiary Fossil Shells, continued.] 

 Journ. Conchyl. ser. 3, t. xvi. pp. 168-180, pis. vi., vii. 



Describes 11 Lamellibranchs : see Index of Species. 



Meek, Prof. F. B. A Report on the Invertebrate Cretaceous and 

 Tertiary Fossils of the Upper Missouri Country. Rep, U. S. Geol. 

 Surv. Terr. vol. ix. pp. Ixiv, 629 ; 45 pla., 85 woodcuts. 



Preliminary' notices of nearly aU the new species have been published, 

 in conjunction with Dr. Hay den, in Proc. Ac. Nat, Sci. Philad., chiefly 

 from 1856-1862. These brief descriptions have been rewritten and 

 enlarged, while full descriptions of the genera and subgenera, with 

 their synonymy and references, and remarks on their geological and 

 geographical ranges, have been added. Pp. xxi-lxiv give a general 

 account of the nature and extent of the geological formations in the 

 region, the undoubted marine Cretaceous strata, the brackish and fresh- 

 water deposits of the lignitic series, and the unquestionable Tertiary 

 beds, most of which are freshwater. The Cretaceous fossils take 

 pp. 1-508. The new genus Microstiza (sp. M. milJepunctata) is pro- 

 posed for a fossil doubtfully referred to the Alcyonaria ; Vanikoropsis is 

 a new genus of Gasteropods ; and Mo rtoniceras and Placenticeras are new 

 genera of Ammonitida). Several subgenera are also founded. 10 new 

 species and 7 varieties of Mollusca are described (see Index of Species). 

 Out of 63 fossils of the fresh and brackish-water beds of the lignitic 

 formation, 4 species and 2 varieties of Gasteropods are new (see 

 Index). Out of 10 Tertiary species, Limncea Shumardi alone is new. 

 In an appendix are descriptions of two Cretaceous species accidentally 

 omitted. H. A. N. 



. Report of the Palaiontological Collections of the Expedi- 

 tion. Appendix J (pp. 337-373, pis. i.-v.) to Report of Explora- 

 tions across the Great Basin of the Territory of Utah, in 1859, by 

 Capt. J. H. Simpson. See p. 142. 

 The fossils described are referable to the Devonian, Carboniferous, 

 Permian, Jurassic, Cretaceous, and Tertiary periods. The Report 

 was written in 1860 ; but its publication was delayed. Owing to this 

 fact, the 25 new species described in it were all published in a series 

 of brief notices in Proc. Ac. Nat. Sci. Philad. (1860). These species are 

 here more fully described and figured, and there are likewise descrip- 

 tions of 13 other previously recorded forms. Concludes with a cata- 

 logue of the fossils collected by the exploring party. H. A. N. 



. Descriptions of the Cretaceous Fossils collected on the San 



Juan Exploring Expedition under Capt. J. N. Macomb [see New- 

 berry, p. 138], pp. 121-133, pis. i., ii. 



