SOUTHERN CALIFORNIA ACADEMY OF SCIENCES _ 57 
found a number of the extraordinary crustacean, Callianassa 
affinis Holmes (determined by Miss Rathbun), and under the 
same boulders specimens of a curious little blind fish. Some- 
what higher up on the beach, but still between tides, the 
boulders furnished great numbers of Isopods. Running about 
among the Isopods were numbers of Thysanurans, and also 
numerous individuals of a small, hight colored Staphylinid 
which has proven to be a new genus and species, and which 
has been named by Casey, Bryothinusa cataline. Thousands 
of specimens of this species might have been easily collected 
at the time we visited the locality. Davenport has found (see 
Cold Spring Harbor Monographs II) that Thysanurans living 
between tides did not retreat or float as the tide rose, but bur- 
rowed down into the sand. There is an unusually fine chance 
for a similar study at Avalon—not only in connection with 
the Thysanurans, but in relation to this curious little Bryo- 
thinusa. : 
No attempt was made to carry away the larger and more 
conspicuous things—numerous collections have been made of 
these. Fine series of fish, of seaweeds, of birds, and various 
other groups of animals and plants could easily be taken at 
this point, and so far as we had opportunity to observe, the 
tnarine life—worms, mollusks, echinoderms, ete.—seemed to be 
abundant. 
Below is given an account of some of the things taken, and 
the ants collected have been kindly worked up for us for pub- 
lication in the Bulletin by Professor Wheeler, Messrs. Ellis 
and Everhard likewise describing the fungi obtained.* 
, FUNGI. 
Besides the new species described by Professor Wheel- 
er, the followmg may also be _ recorded: Thyridium 
lividum Pers., occurred commonly on the dead stems 
of Ramona polystachya and Isomeris, arbore. Speci- 
mens of Lycoperdon gemmatum Batsch., were found 
on mossy banks underneath bushes, and Geaster hygro- 
metricus occurred in similar places. An evergreen Rhus in the 
eulches was very commonly affected with a Harknessia para- 
sitic on the leaves. The cacti abundant here were very com- 
monly affected with exceptionally fine specimens of a Phoma 
which Dr. Ellis has questionably referred to Phoma dpuntiz. 
He remarks that in the Catalina specimens the spores are 
smaller and of two kinds. 
ARACHNIDA. 
Two specimens of Drassids taken near Avalon have served 
as the types of a new genus and species, and have been de- 
*These papers follow in this issue of the Bulletin.—(Ed.) 
