THE NAUTILUS. 35 



texture of the epidermis, urged by some as a distinguishing charac- 

 teristic. A full series of the shell from the Rideau Canal here, 

 where it occurs abundantly, and where radiatns — common elsewhere 

 in this vicinity — does not occur at all, would however be readily re- 

 cognized as hiteohis. But Dr. Lea's identification of the Ottawa 

 shell as radiatus is liable to mislead, and notwithstanding this cor- 

 rection doubtless will mislead many students, who while his great 

 collection endures will have recourse to it for the solution of not a 

 few difiiculties. — F. R. Latchford, Ottawa, Ont. 



PUBLICATIONS RECEIVED. 



Annotated List of the Types of Invertebrate Creta- 

 ceous Fossils in the collection of the Academy of Natural Sciences 

 of Philadelphia. By Charles W. Johnson. Proc. A. N. S. Phila., 

 1905, pp. 4-28. Four hundred entries, exclusive of synonyms, are 

 comprised in this catalogue of types, which is one of the fruits of Mr. 

 Johnson's labor in working over the entire collection of American 

 Cretaceous invertebrates in the Academy's collection. The follow- 

 ing groups are represented : Corals, 5 species ; Annelida, 8 species ; 

 Polyzoa, 31 species; Brachiopoda, 4 species; Echinoderms, 23 

 species; Crustacea, 4 species; Mollusca, 325 species. No attempt 

 at full synonymy is made, but the author's broad acquaintance with 

 the subject enables him to add many critical notes and to bring the 

 list abreast of the times in nomenclature. Three new species are 

 introduced : Nemodon conradi Johnson, Cucullsea gabbi Johnson, 

 Straparollus deplanatus Gabb. — H. A. P. 



Notes on the Molluscs, Reptiles and Amphibians of On- 

 tonagon Co., Michigan. By A. G. Ruthven. Sixth Ann. Rep. 

 Mich. Acad. Sciences. Records of Mollusca from the Upper Pen- 

 insula have been very rare hitherto. This list of 71 species therefore 

 fills a gap in the map. 



Fossils of the Bahama Islands, with a list of the non-marine 

 Mollusks. By TVm. II. Dall. Extract from "The Bahama Islands." 

 The marine fossils noted are all of recent species. Phacoides penn- 

 sylvanicus, Codakia orbicularis, Tellina radiata, Area occidentals* 



