THE NAUTILUS. 69 



other changes mentioned were surely essential to progress. We 

 might even recall that Morse himself threw a grenade into the 

 nomenclature of land and fresh-water shells in his Maine Cata- 

 logue of 1864. H. A. P. 



DESCRIPTIONS OF NEW SPECIES OF MOLLUSKS OF THE FAMILY 

 TURRITIDAE FROM THE WEST COAST OF AMERICA AND ADJACENT 

 REGIONS. By Wm. H. Dall (Proc. U. S. Nat. Mas., Vol. 56, 

 pp. 1-86, pis. 1-24, 1919). A very exhaustive faunal work on 

 this family. Over 200 species are considered, of which 181 are 

 new. The illustrations are excellent, many of Carpenter's 

 species being figured for the first time. In regard to the family 

 name Dr. Dall says: "Some question having been raised as to 

 the spelling of the family name which I have retained as first 

 proposed by Henry and Arthur Adams in 1853, I submitted 

 the question of Turridae versus Turritidae to two expert Latin- 

 ists, who after due consideration of all the data, concluded that, 

 while either was correct, the latter term under the circumstances 

 was to be preferred. ' ' 



PELECYPODA OF THE ST. MAURICE AND CLAIBORNE STAGES. 

 By G. D. Harris (Bull. Amer. Paleontology, Vol. 6, 1919). A 

 valuable contribution to American Paleontology. The work 

 contains 268 pages and illustrated by 59 plates, every species 

 and variety being figured. About 250 species and varieties are 

 described, of which more than 50 are new. Two new sub- 

 genera Mauricia and Pachecoa are proposed. The work is 

 dedicated by the author to the Hon. Truman A. Aldrich. 



SEXUAL ACTIVITIES OF THE SQUID, Loligo pealii (Lea). By 

 Gilman A. Drew (Journal of Morphology, Vol. 22, No. 2, and 

 Vol. 32, No. 2). An extremely interesting and well illustrated 

 account of phenomena rarely observed. The second paper deals 

 with the structure and activities of the spermatophore. The 

 observations were made upon specimens kept in aquaria at 

 Woods Hole, Mass. 



