THE NAUTILUS. 89 
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. ] 
A number of good reports have been promised. The volume of 
Transactions has been forwarded by Mrs. Mary P. Olney to Mrs. 
Drake, who will forward it to Mrs. King at Napa, Cala. By that 
time all our members will have received it. 
In the November Nauritus Mr. Herbert Lowe’s name appeared 
as “Howe” in the article on “Collecting During the Summer of 
96.” 
The following nominations have been made for the officers of the 
Chapter for 1898: for President, Prof. Josiah Keep; for General 
Secretary, Dr. Wm. S. Strode. 
Dr. William Healey Dall has named a new shell collected in 
Alaskan waters Crenella Leana, in honor of Dr. Isaac Lea, for 
whom our Chapter was named. The shell, a little bivalve, is de- 
scribed in a Bulletin issued by the Natural History Society of 
British Columbia, entitied “ Notice of Some New or Interesting Spe- 
cies of Shells from British Columbia and the Adjacent Region,” by 
William Healey Dall, Hon. Curator Dept. of Mollusks, U. S. 
National Museum. ‘The Bulletin contains 18 pages, 2 plates, with 
38 figures, and an index to all species mentioned in the text. Of 
the 30 species figured in this pamphlet, 27 are Dr. Dall’s species, 
23 are new species and 4 have been described by him but not fig- 
ured in THe Naurinus. Leda taphria Dall, known on the West 
Coast as L. celata Hinds (non Conrad) is figured.—The October 
Navtiius for 1896, contains a note on this species—The genus 
Malletia is for “ the first time recorded from the northwest coast of 
America.” 
MORNING TIDES. 
[From the report of Mrs. M. L. Beck. From the Transactions of the Isaac Chapter 
for 1896]. 
One bright day in June I was told we were to go collecting the 
next day at San Pedro, and as the tide would be Jow at half past 
three in the morning, we would have to go to the beach the evening 
before and stay all night at the cabin on the island. * * We 
ate supper, and while two of us got things ready for the night, the 
