Crustacea From Lacuna Beach 
The following notes are on Crustacea collected by general and 
special students during the past several years. In cases where the 
forms were especially valuable or rare the name of the collector is 
indicated. Most of the specimens here recorded were collected 
during the past two years, a few earlier ones are also included in 
this report. Those marked U.S.M. were determined for us by the 
United States National Museum at Washington. The photographs 
are by Robbins, drawings by Baillard and Macdonald. 
Ciilluintissa lunginuDUJ Stimp. 
These "ghost shrimps" are fairly common under stones in tide 
pools. The median prominence of the front subacute, cornea behind 
middle of eye stalk. Cheliped of male elongate. Carpus nearly 
twice as long as broad (Fig. 14). 
C. calif ornieusis Dana, U.S.M. 
Similar to the other species in general, but the exact distribution 
of each not yet determined. Specimens of this species were taken at 
Balboa bay by Mr. Daniels. These showed red in the center of the 
body and yellow at the sides due to the internal organs showing 
through. According to Rathbun there are the following differences 
from the other species: "Median prominence of front rounded; 
cornea in middle of eye-stalk; large cheliped of male very broad, 
the carpus very little longer than broad, but longer than palm." 
Those we have found are smaller than the large of the other species. 
Pel gurus liirsiiliuscultis Dana, U.S.M. 
This small hermit crab was found in the tide pools. It was col- 
lected by La F'ollette, Macdonald, Hilton and others. Speckled 
and banded legs. 
P. samuelis Stimp., U.S.M. 
This small hermit crab was found abundantly in the tide pools. 
Specimens were larger than the other species as a rule. Blue legs. 
Paguristes bakeri Holmes, U.S.M. 
This large hermit crab was dredged off the coast of Laguna 
Beach bv Prof. A. M. Bean and W. F. Hamilton. It was found 
