106 THE NAUTILUS. 



proportion of blues among them than the corresponding shells 

 in the Upper Ohio Drainage. 



LIGHT PRODUCTION IN CEPHALOPODS. By S. Stillman Berry 

 (Biol. Bull., 1920, Vol. 28, pp. 141-195). An Introductory 

 Survey. 



NOTES ON SOME UNDESCRIBED CALIFORNIAN HELICES. By S. 

 Stillman Berry (Proc. Gal. Acad. Sci., 4 ser., Vol. 10, pp. 53- 

 70, pis. 4-6, 1920). Five new subspecies of Epiphragmophora 

 are described and figured. 



FOSSIL MOLLUSKS FROM THE JOHN DAY BASIN IN OREGON. By 



G. Dallas Hanna (Univ. Oregon Publication, Vol. 1, No. 6, 

 1920). Two new species are described and figured. 



REPORT OF CEPHALOPODS COLLECTED DURING 1906 BY THE 

 U. S. BUREAU OF FISHERIES STEAMER "ALBATROSS" IN THE 

 NORTHWESTERN PACIFIC. By Madoka Sasahi (Prac. U. S. Nat. 

 Mus., Vol. 57, pp. 163-203, pis. 23-26, 1920). The paper 

 contains descriptions of 18 new species, three new genera Wata- 

 sella, Chunella and Gonatopsis, and two new families Watasellidae 

 and Eledonellidae. C. W. J. 



A MONOGRAPH OF THE EAST AMERICAN SCAPHOPOD MOLLUSKS. 

 By John B. Henderson (U. S. Nat. Mus., Bull. Ill, 1920, pp. 

 1-177, pis. 1-20). This excellent monograph is based upon 

 the material contained in the National Museum, including much 

 dredged by the author, together with the American Scaphopods 

 of the Philadelphia Academy and the Mus. Comparative Zoology. 

 Practically all of the East American material extant has there- 

 fore been studied. The classification is that of Pilsbry and 

 Sharp, with the addition of a new subgenus of Cadulus : PLATY- 

 SCHIDES, type C. grandis Verrill. 



The specific distinctions of these simple shells are worked 

 out with admirable clarity, in the descriptions and keys for de- 

 termination. All of the species and subspecies are illustrated. 

 98 species, about one-third of them new, with numerous sub- 



