102 THE NAUTILUS. 
Pristiloma stearnsi Bld. Margaritana margaritifera Linné 
Punctum conspectum Bld. Sphaerium nobile Gld. 
Punctum randolphi Dall. Sphaerium raymondi J. G.C. 
Epiphragmophora fidelis Gray. | Sphaerium primeanum Cless. 
Epiphragmophora fidelis minor.  Pisidium compressum Prime. 
Epiphragmophora fidelis albino. | Pisidium idahoense Roper. 
Polygyra (Mesodon) townsendi-  Pisidium ultramontanum Prime. 
ana Lea. Pisidium variabile Prime. 
Polygyra (Mesodon) columbiana | Pisidium abditium Hald. 
Lea. _ Pisidium randolphii Roper. 
Polygyra (Mesodon) devia Gld. | Physa gabbi Tryon. 
Polygyra (Stenotrema) germana Limnza tryoni Lea. 
Gld. Limneea palustris Linn. 
Vertigo simplex Gld. Limnza humilis (introduced) 
Vertigo binneyana Sterki. Say. 
Succinea oregonensis Lea. Planorbis trivolvis binneyi Try. 
Succinea nuttalliana Lea. Planorbis callioglyptus Vanatta. 
Carychium occidentalis Pilsbry. _Planorbis vermicularis Gld. 
Anodonta californiensis Lea. Ancylus fragilis Tryon. 
Anodonta oregonensis Lea. Valvata sincera Say. 
ISAAC LEA DEPARTMENT. 
. 
[Conducted in the interest of the Isaac Lea Conchological Chapter of the Agassiz Associa- 
tion by its General Secretary, Mrs. M. Burton Williamson. } 
Next month we will be able to announce the result of the annual 
election of officers for the Chapter. 
This has been a year of activity along conchological lines in our 
chapter, and plenty of good reports are sure to follow enthusiastic 
work. 
The fraternal spirit expressed by the members of our Chapter 
reveals the goodwill of each member, and is a pleasant feature in 
work of the Association. 
COLLE TING IN SOUTHERN CALIFORNIA. 
[Report of Mrs. G. W. White. From the Transactions of Isaac Lea Conchological 
Chapter of the Agassiz Association for 1894.] 
My interest in the science of conchology dates from the summer 
of 1898, when Prof. Josiah Keep, of Mills College, taught this sub- 
