CALIFORNIA ACADEMY OF SCIENCES 



[Proc. 4th Seb. 



Fig. 1. Dendrochiton thamnoporus (Berry). Camera sketch of dorsal 

 aspect of right side of valve v of type [8a], from off Monterey. 



Fig. 2. Dendrochiton thamnoporus (Berry). Camera outline of valve v 

 of type [8a], anterior elevation. 



Fig. 3. Dendrochiton gothicus (Carpenter). Camera sketch of dorsal 

 aspect of right side of valve iv of specimen [478] from San Pedro. 



Fig. 4. Dendrochiton gothicus (Carpenter). Camera outline of valve 

 iv [478], anterior elevation. 



