Vol. 31, pp. 137-138 November 29, 1918 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



CHANGES IN AND ADDITIONS TO MOLLUSCAN 

 NOMENCLATURE. 



BY WILLIAM HEALEY DALL. 



In a paper ready for the printer, but which may be consider- 

 ably delayed in publication, the following changes in nomen- 

 clature occur, which it is thought best to publish at the present 

 time. 



Tromina new genus, type Fusus unicarinatus Philippi, from the 

 Magellanic area. 



Neptunea Bolten. I showed in 1902 that after deducting properly pro- 

 posed genera from the heterogeneous assembly included under this name 

 by Bolten, the remaining portion which would keep the name was typified 

 by Trophon clathratus upon which G. O. Sars later founded his genus 

 Boreotrophon. 



The genus Littorina typified by T. littoralis beside the typical section 

 is divisible as follows: Section Algaroda Dall, typei. litorea L.; Section 

 Littorivaga Dall, typeL. sitchana Philippi; and the following subgenera: 

 Melaraphe (Muhlfeldt) Menke, 1828, type L. neritoides L.; and subgenus 

 Algamorda Dall, type L. newcombinna Hemphill. 



Boetica new genus, is proposed for B. vaginata Dall, a small shell 

 resembling conchologically a very solid Lacuna but with a sulcus at the 

 posterior commissure of the aperture and one like that of Trichotropis 

 anteriorly; the surface smooth, but the operculum unknown. Habitat: 

 San Diego, Cal., in 199 fathoms. 



Isapis Adams, 1853, being preoccupied by Westwood in 1851, Iselica 

 is proposed as a substitute. 



Elachisina (grippi Dall) new genus and species, is proposed for a 

 minute shell resembling a short Cingula in form with fine sharp spiral 

 striae over the whole shell giving the aspect of a small littoriniform 

 Eunaticina. San Diego, Cal. , in 20 fathoms. 



Kurtziella, new section of Mangilia, type Pleurotoma cerina Kurtz and 

 Stimpson. Atlantic coast. 



36— Proc. Biol. Soc. Wash., Vol. 31. 1918. (137) 



