36 Journal of the Mitchell Society. [March 



Caulophacus schulzei, sp. no v. 



sp. 

 Bathydorus lev is spiuosus, subsp. nov. 

 Staurocalyptus sp. 

 Farrea occa claviformis, subsp. nov. 



" mexicana, sp. nov. 



' ' sp. 

 Enrete erectum tubuliferum, subsp. nov. 



" " mucronatutn, subsp. nov. 



" " gracile, subsp. nov. 



" sp. 

 Aphrocallistes vastus F. E. Sch. 

 Chonelasma calyx F. E. Sch. 

 Bathyxiphiis sp. 

 H&xactinella labyrinthica, sp. nov. 



" ventilabrum Carter. 



" tubulosa E. E. Sch. 



Sclerothamnopsis compressa, gen. et, sp. nov. 

 Thenea fenestrata(0. Schmidt) Sollas. 



" echinata, sp. nov. 



" lamelliformis, sp. nov. 



" pyriformis, sp. nov. 

 Poedllastra tricornis, sp. nov. 



" cribraria, sp. nov, 



Penares foliaformiS) sp. nov. 

 Polymastia maeandria, sp. nov. 

 Petrosia variabilis crassa, subsp. nov. 



" similis densissima, subsp. nov. 

 Pachychalina acapuclcnsis, sp. nov. 

 Oceanapia bacillifera, sp. nov. 

 Gellius perforatus, sp. nov. 

 Tylodesma alba., sp. nov. 



" vestibularis, sp. nov. 



Iophon chilifer ostia-magna, subsp, nov. 



" lamella, sp. nov. 



" lamella indivisus, subsp. nov. 



