74 Pomona College, Claremont, California 



Massive pink-white sponge. These are calcareous in part, pink on the surface 

 and very dense. Channels not well marked. Large masses under rock ledges. 



In addition to the above there is a very bright red sponge which is found under 

 stones. 



At Balboa bay among some oysters there is a large irregular pyramidal dermal 

 sponge of a dark brown color. 



(Contribution from the Zoological Department of Pomona College.) 



