1914 Pomona College Journal of Entomology and Zoology, Vol. VI, No. 4, Dec. 



Barnacles of Laguna Beach 



MISS S. P. HUGHES 

 PACIFIC UNIVERSITY, FOREST GROVE, OREGON 



Five species of barnacles were found last summer at Laguna 

 Beach. For the identification of the first two of these, we must 

 thank Dr. H. A. Pilsbry of the Academy of Natural Sciences, 

 Philadelphia. 



Figure 1 



Balanus t'nitinnahuhim calif ornicus Pils. Fig. 1 



The most common of the acorn barnacles ; found abundantly on 

 rocks, mussels, etc. There are six valv'es or plates; the rostrum, 

 carina, and two latera on each side. These plates are delicately 



Figure 2 



marked with pink stripes. The connecting pieces are often trans- 

 versely lined. This is the largest of the common acorn barnacles; 

 the average height is about an inch. 



