THE NAUTILUS. 95 
Since writing you last, I have collected 208 living Vitrina lim- 
pida Gld. The last time I was out, a friend and myself collected 
70 in an hour, and only took the /argest specimens. 
—Geo. H. Clapp, Pittsburg, Pa. 
On Lanp anp Fresu Water Mouiusca or LOWER CaLiror- 
nra, by Dr. J. G. Cooper (Calif’a Acad. Sci. III). In this paper 
several very interesting species are described and figured. Among 
them are two species referred to Columna, a Melaniella, two Planor bis 
allied to P. cultratus Orb., and a sub-species of Helicodiseus lineatus. 
THe Isaac Lea Cuaprer of the Agassiz Association is becom- 
ing an important factor in the revival of interest in American 
conchology. The President is now Prof. Josiah Keep ; the General 
Secretary Mrs. M. Burton Williamson (University, Los Angeles 
Co., Cal.). Interesting reports of their work are published by the 
Secretary in Popular Science News from month to month. 
A valuable paper on the anatomy of Bulimus acutus, by 
Messrs. W. Moss and F. Paulden, appears in the Trans. Manchester 
Micros. Soe. for 1892. 
THe First MEETING of the Winter Session of the Perthshire 
(Scotland) Society of Natural Science was held at Perth, Nov. 
9, Mr. Henry Coates, President, in the chair. In his opening 
address the Presideut gave his impressions of the principal Scientitic 
Museums of America, which he had visited during the Summer. 
The criticisms seem for the most part appreciative and just, and are 
of interest to us as showing how our work appears in the eyes of a 
cultured observer familiar with English museum methods. 
Dr. Wm. H. Dat has left Washington to investigate geological 
problems in South Georgia and Florida. 
Messrs. HENDERSON AND Simpson, of Washington, have de- 
parted on a winter tour in the West Indies, especially Jamaica. 
They will no doubt return with a rich store of conchological 
plunder from this paradise of mollusks. 
ACANTHOCHITES EXQutisitus Pilsbry.—The locality given in a 
former number of the Nautiuus for this species is incorrect. I am 
informed by Dr. R. E. C. Stearns that Mr. Lockington procured his 
