THE NAUTILUS. 71 



Molluscan Notes IV, by Hugh C. Fulton, p. 3. Ennea pal- 

 laryi Preston = E. vriesiana Aucy ; Xestina grunulosa Molldff. 

 = H. danae Pfr. ; Goniostomus subhybridus Da Costa = Buli- 

 mulus (Drymceus) pulcherrimus H. Adams; Pseudachatina 

 daillyana Pilsbry = P. perelongata Rolle ; Neptunca antiqua 

 japanica Dautz. & Fisch. = Chrysodomus intersculptus Sowb. 



Additions to the List of Recent Middlesex Mollusca. By J. 

 E. Cooper, p. 5. 



The Affinities of Pyramidula, Patulastra, Acanthinula and 

 Vallonia. By Hugh Watson, pp. 6-30, pis. 1 and 2. 



On Mitra montereyi, a new Californian species. By S. 

 StiUman Berry, pp. 31-33. 



On Six Variations of Clausilia, bidentata and Ena obscura, 

 with a locality. By A. E. Boycott, pp. 34-42. 



On Mitra montereyi, a new Californiaii species. By S. 

 Stillmaii Berry, pp. 31-31. 



On the Size Variation of Clausilia bidentata and Ena. ob- 

 scura, with a locality. By A. E. Boycott, pp. 34-42. 



CONTRIBUTIONS TO THE HISTORY OF THE CERIONID.E. By C. 

 J. Maynard (Pts. 1-5, App. to Vol. 10, Records of Walks and 

 Talks with Nature). 



ON CERTAIN FOSSIL SHELLS IN THE BOULDER CLAY OF BOS- 

 TON BASIN. By Edward S. Morse (Amer. Jour. Sci., 1920, 

 Vol. 49, pp. 157-165). A very interesting paper. The author 

 believes that the thick fragments found in the various deposits 

 represent the southern Venus campechiensis and not V. mer- 

 cenaria,. 



A CLASSIFICATION OF THE AMERICAN OPERCULATED LAND 

 MOLLUSKS OF THE FAMILY ANNULARinxE. By John B. Hen- 

 derson and Paul Bartsch (Proc. U. S. Nat. Mus., 1920, Vol. 

 58, pp. 49-82). In this paper American ' ' Cyclostomidas " are 

 separated from the Old World groups and placed in the 

 family Amralariidae, the principal character used in sep- 

 arating them being the radula. 



