56 DlCTYOSPONOID^. 



Genus Clathrospongia, Hall. 



C? Hamiltonensis, Hall (sp.). C. irregularis, Hall. 



C. fenestrata, Hall. C? desmia, sp. nov. 



C. vascellura, Hall. C. abacus, Hall. 



C? tomaculuui, Hall. C. caprodonta, sp. nov. 



L. crinita, sp. nov. 



Genus Lebedictya, gen. nov. 



Genus Lyrodictya, Hall. 

 L. Romingeri, Hall. L.? Burlingtonensis, Hall (sp.). 



Genus Mastodictya, gen. nov. 

 M. osculata, sp. nov. 



Subfamily THYSANODICTYINiE, subfam. nov. 

 Genus Thysanodictya, gen. nov. 

 T. Edwin-Halli, Hall (sp.). T. quasilluin, sp. nov. 



T. pcecilus, sp. nov. T. scypliina, sp. nov. 



T. rudis, Hall (sp.). T. hermenia, sp. nov. 



T. Randalli, Hall (sp.). T. apleta, sp. nov. 



T. saccus, sp. nov. T. turricnla, sp. nov. 



T. Johnstoni, sp. nov. T. expansa, Hall (sp.). 



Genus Phragmodictya, Hall. 

 P. catilliforinis, Whitfield (sp.). P.? lineata, Hall. 



P.? crebristriata, Hall. 



Genus Arystidictya, gen. nov. 



A. elegans, sp. nov. A. nodifera, sp. nov. 



Genus Acloeodictya, gen. nov. 

 A. marsipus, sp. nov. A.? excentrica, Hall (sp.). 



Genus Griphodictya, gen. nov. 

 G. epiphanes, sp. nov. 



Subfamily CALATHOSPONGIINiE, subfam. nov. 

 Genus Calathospongia, gen. nov. 

 C. Redfieldi, Hall (sp.). C? sacculus, Hall (sp.). 



C. carceralis, sp. nov. C. amphorina, sp. nov. 



C. Carlli, sp. nov. C? magnifica, sp. nov. 



C. Tiffanyi, sp. nov. 



