THE NAUTILUS. 33 
to our membership are now published in Tor Nauritus. Our 
Chapter is so large that the small amount charged for dues, for one 
member, is consumed by the time the new one has been introduced 
by postal card to all the members of the chapter. Tur Nauri.us 
is our chapter organ and no member can afford to be without it. 
The Juvenile Section is reported in The Observer, Portland, 
Coun., May number page 265, under the title “ Notes from Young 
Conchologists.” 
AN INTERROGATION REGARDING THE FOSSIL SHELLS OF 
SAN PEDRO BAY. 
[An Extract from the Report of the Hon. Delos Arnold. Fromthe Transactions of 
the Isaac Lea Conchological Chapter for 1895]. 
It is probable there are many species of shells undiscovered in the 
hidden recesses of our extended shores, that will be reveaied from 
time to time as our facilities for systematic collecting are increased, 
This feature of the question cannot but inspire the devotees of con- 
chology—both old and young—with a keen interest. The possibility, 
not to say strong probability, of being instrumental in adding new 
forms to the accumulating list is an ever present incentive to earnest, 
careful and intelligent observation. To lend color to the idea of the 
existence of undiscovered species in this region, is the fact that 
among three hundred or more species and varieties of Quaternary and 
Tertiary marine fossils that have been discovered in the rocks and 
raised beaches in the vicinity of San Pedro Bay there are many 
that are supposed to be extinct in this locality, and yet, the same or 
nearly allied species are known to be living along the shores of 
Alaska and Washington, and some even as far south as the northern 
shores of California. Among there are; Machera patula Dixon, 
Priene Oregonensis Redf., Pecten hastatus Sby., Nassa Californica 
Conr, and others. 
There are several species, also, that are occasionally found alive 
at Santa Cataline Id. and possibly in the water in San Pedro Bay, 
whose scarcity excites the suspicion that they are “in the course of 
ultimate extinction,” or at least, in the line of departure. Among 
these are: 
Chrysodomus tabulatus Baird. 
Fusus Barbarensis Trask. 
