CLARK : PUGET SOUND ECHINODERMS. 
337 
true Psolus to be recorded from the western coast of North America, 
although P. fabricii and P. japonicus are known from the other 
side of the Pacific. 
In concluding this report, it may be said that its chief value lies 
in the interest which it ought to arouse in the echinoderms of the 
Pacific Coast. A wide field for investigation lies open there, which 
should be occupied at once, and the mission of this paper will be 
performed if it serves as a stimulus to a proper investigation of that 
field. 
Olivet College, Michigan, 
May 1, 1900. 
Printed, May , 1901. 
