PLATE XIII. 



PAGE. 



AGABICOCBINUS NODULOsus Worthen 94 



Pig. 1. Basal view of calyx. 



Pig. 1 a. Lateral view of calyx, anal side. 



AGABICOCBINUS MAC-ADAMSI Worthen 91 



Pig. 2. Basal view of calyx. 



Pig. 2 a. Lateral view of calyx, anal side. 



B ATOCKINUS UNIONENSIS Worthen 84 



Fig. 3. Lateral view of calyx and arms. 



BATOCBINUS SUBCONICUS Worthen 84 



Fig. 4. Lateral view of calyx and ventral tube. 

 Fig. 4 a. Basal view of calyx. 



BATOCBINUS NASHVLLLS Troost, sp 85 



Fig. 5. Lateral view of calyx and ventral tube. 



POTEBIOCBINUS NODOBASALIS WOrtlH'll 89 



Fig. 6. Basal view of calyx and arms. 



