Bui. U S B. F 1906 



Plate VII. 



12 13 



1-3. ScalpeUum gruvelianum. Lateral view with ventral and dorsal details. 



i. ScalpeUum gruvelianum secundum. Type. 

 ~>-ii. Balanus galeatus. From station 1432. 

 7-10. Balanus t vermanni. Carina, rigfat-carlna], and right-rcstral latera and rostrum <-f a cotvpe. Exterior view. 

 U-14. Balanus evermanni. Interior view. All about \ natural size. 



