210 THE ABIBRICAN MONTHLY [July, 



Four feet ; Stephanium 



Stephaniscus should be inserted after Cortiniscus {same page) and the Key 

 should read : — 



Four basal feet Stephaniscus 



123. TEIPOCALPLS. 



Shell about as long as broad; apical horn scarcely one fourth as long 



as shell ". galea 



Shell 11-2 times as long as broad ; aj)ical horn half as long as shell, tricostata 



124. TRIPILIDIUM. 



Shell elongate ; about 30 longitudinal rows of small pores elongatum 



125. CINCLOPYRAMIS. 



Shell with 6 ribs, connected by 12-16 complete rings cribellum 



Shell with 12 ribs, connected by 12-15 interrupted rings lithosestrum 



126. HALICALYPTRA. 



Six feet, 1 -2 as long as the shell virginica 



Six feet, as long as the shell, with dentate edges campanula 



Six feet, 2-3 times as long as the shell ampulla 



Nine feet, about as long as the shell novena 



127. CARPOCANISTRUM. 



Shell large, with 40-50 pores on its greatest breadth giganteum 



128. PH^NOCAIvPIS. 



Shell subspherical, smooth ; 6 feet ocellata 



Shell campaniilate, rough ; 9 feet cariuata 



Shell campanulaLe, smooth ; 12-15 feet flabellum 



129. CORNUTELLA. 



Shell slender, conical ; pores nearly square stiligera 



Shell wide, conical or funnel-shaped ; pores circular in about 9-12 lon- 

 gitudinal rows circularis 



Shell wide, campanulate ; pores circular, not in rows niitra 



Shell wide, conical ; pores circular in 12-15 longitudinal rows clathrata 



130. ARCHICORYS. 



Shell nearly spherical ; pores separated by spinulate frames globosa 



131. CYRTOCALPIS. 



Shell ovate ; pores perpendicularly perforating the wall compacta 



Shell nearly cylindrical ; pores obliquely perforating the wall lithomitra; 



132. HALICAPSA. 



Shell tuberculate ; pores of different sizes prunoides 



