THE NAUTILUS. 63 
with nearly the same characters. All of the corrugated speci- 
mens possessed three holes, while of the nine specimens of this 
variety one had one hole, two had two holes, and the rest had 
three. 
Haliotis californiensis.—The Japanese gardeners at La Jolla 
are good fishermen also, and frequently gather abalones for the 
meat. One of them gave me a specimen which for lack of a 
better name I have given the abovename. It is 5} inches long, 
42 across, 2 high, and has 11 small nearly circular holes out- 
side, showing traces of two closed holes. The inside contains a 
large ‘‘ pearl’’ or muscular impression, triangular in shape, and 
instead of the clear pearly white of H. cracherodii, there are 
large blotches of brown, green, blue and pink iridescence. I 
have had many similar specimens from the west coast of Baja 
California, which have never been determined to my satisfac- 
tion. Dr. Stearns I believe tentatively referred them to the 
above species of Swainson. 
Caecum orcutti Dall.—This seems to be absent from the lists 
given in THE Navutixus. The type locality was at a point about 
two miles south of La Jolla’s caves, where under a flat rock I 
must have found more than 100,000 examples of this minute 
species. I have sent the U. S. National Museum what I esti- 
mated as near 50,000 specimens, which 1 believe breaks the 
record for any single collection in this genus. It has been 
found at San Pedro, Cal., I believe, and at Todos Santos Bay, 
Baja California. 
Helix pisana.—This snail has been recorded in THE NautiLus 
as from La Jolla (though not in the lists referred to above). 
The first of September, 1918, I found it for the first time, and 
reported its occurrence as a menace to California horticulture. 
A representative of the County Horticultural Commission 
counted nearly 800 living on one bush about a foot high with a 
spread of three feet. A dozen would frequently be found on 
one stem of the wild ocak. Itseemed to have no preference, but 
was abundant on native and cultivated plants alike, and thou- 
sands were observed on the sides of the cement curbing and on 
the sides of houses near by. But the tens of thousands ob- 
served were apparently confined to a district less than half a 
