1916 Pomona Journal of Entomology and Zoology, Vol. VIII, No. 2, June 



Crustacea From Laguna 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 

 ciuring 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. 



CaUiaiiassa lo}igimana 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 orniensis 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. 



Pcigurus hirsiitiiisciiliis Dana, U.S.M. 

 This small hermit crab was founci in the tide pools. It was col- 

 lected by La Follette, Macdonald, Hilton and others. Speckled 

 and banded legs. 



P. samiiclis 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. 



Pagnristes hakcri Holmes, U.S.M. 

 This large hermit crab was dredged off the coast of Laguna 

 Beach by Prof. A. M. Bean and W. F. Hamilton. It was found 



