Some Echinoderms Collected at Laguna 



Beach 



During the summer of 1916 a number of echinoderms were 

 collected at Laguna Beach, some of these have not been found by 

 us before. The determinations are by Prof. H. L. Clark: 



Lylccliiiitis ciiuimcsHS H. L. C. 

 These little sea-urchins were taken off shore at about 20 fathoms. 



Heuricia hi-liiisciila Fisher 

 This little starfish was collected by Mr. L. Grow at low tide. 

 The arms are much like those of the common L. cohimbiie Gray. 

 The central part was yellow, the arms with purple tips. 



Sticliopus joliiisoiii Heel. 



This large brick-red sea cucumber was obtained in deep water 

 by fishermen. Other holothurians were too small or not properly 

 preserved for certain identification. 



Several small brown specimens have been obtained in the past 

 few years belonging to the genus Thyonc. 



Last year several red ones, with black tentacles, were obtained 

 which Dr. Clark thinks are Ciiciiinciria. 



In 1914 a single young specimen of Psoitis sp. was obtained 

 in shore. We have not yet found many specimens of sea cucum- 

 bers, but these notes may aid a little in determining what we may 

 look for. 



(Contribution from llic Zouhxjical Luboratory of Pomona Colliffc) 



