120 THE NAUTILUS. 



I STILL HAVE a few more sets of California land, fresh-water and 

 marine shells to exchange for other Pacific Coast and Eastern 

 species, etc. Kindly send lists to — WilUard M. Wood,2^\l, Clay 

 St., San Francisco, Cah 



Vallonia waxted. — Dr. V, Sterki, of New Philadelphia, Ohio, 

 desiring to make a critical study of the American forms of this 

 groups, solicits specimens of Vallonia from all parts of the Country. 

 Named sets will be returned to each person contributing specimens. 

 The editor heartily recommends collectors to communicate with Dr. 

 Sterki. — Ed. Nautilus. 



NEW PUBLICATIONS. 



Proceedings of the California Academy of Sciences, III, 

 Sept. 1, 1891, contains the following conchological papers: 



Notes on the Snbalpine Mollu.ica of the Sierra Nevada near Lat. 

 38°, by W. J. Raymond, with appendix by Dr. J. G. Cooper. 

 A valuable paper, giving the altitudes at which many species were 

 found, with other useful notes. In an appendix Dr. Cooper gives 

 additional notes on the same subject and describes and figures 

 Sphcerium Raymondi n, sp., S. lenticula Gld., S. jyartumienm Say, S. 

 truncatum Linsl., Ancylus caurinus Cp., A. fragilis Tryon, Planorbis 

 subcrenatus var. diyectus n. var., with many useful comparative 

 notes. As a generic term for the " calyculate " species of Sphcprium, 

 Dr. Cooper proposes Primella. This name becomes a synonym of 

 Calycidina Clessin, founded upon the same peculiarity. Planorbis 

 subcrenatus, v. disjectus is a form like Ingersoll's P. ple.vatus, having 

 the inner whorls on a different plane from the last one. 



On land and fresh-icater shells of Loiver California, by Dr. J. G. 

 Cooper. The following species are described : Bulimidus inscendens 

 W. G. B. var. Bryanti, Rhodea California Pfr. subsp. ? ramentosa. 

 The last is an extremely interesting discovery, as the genus has been 

 supposed to be entirely South American, the Californian citations 

 of earlier authors having been discredited by many. 



Catalogue and synonymy of the recent species of Muricidw, 

 by Frank C. Baker. The species of Muricince are enumerated in 

 this paper by Mr. Baker, with notes on their distribution, variation, 

 etc. 



