vi TABLi: OF CONTENTS. 



Pahk. 

 (\lNOTRETA - - - - - - - - - - - - -104 



DisriNOPSis ------ - 105 



iSl.NXAKSSON'IA -_.--------- 107 



Mksotketa ------------ 1(19 



SiPHONOTRETA - ----.------] 1() 



ScHIZAMBO.N ------------ 113 



Kkvskklingia - - - - - - - - -. - - -117 



Helmersenia ------------ 119 



DisfiNA, Orbicui-a, Orbkiloiiiea, ScmzivrKKTA, DiscixiscA, Lindstroemella, 

 QShlerteli.a, Rokmerei.i.a --------- 120 



Trematis ------------ 128 



SclllZ(X-RAXIA ------------ 142 



Crania ------------- 14(5 



Cranieixa ------------- 153 



CARDlNOfRANIA ----------- ]54 



Pholidops - - - - - - - - - - - - -155 



Note to litige 128 -------- jgo 



CONCLUSION - - - . 161 



SUPPLEMENT TO THE BRACIIIOPODA INARTICULATA - - - - 171 



II. HHACIIiOPODA ARTICULATA --------- 185 



Okthis - 186 



Orthis ------------- 192 



Plcctortliis ------ 194 



Diiiorthis ------------- 195 



Plffisioniys ------------ 19^ 



Ilebertella ------------ 19^ 



Ortliosti-oiihiii ----------- ]gg 



Platysti'opliia ------------ 2OO 



Ilot.erorthis ------------ 202 



Bil()l)ites ------------- 204 



Ualinaiiplla ------------ 205 



Rhipifloiiiella ----- 208 



Scliizoplioiia ------------ oil 



Ortliotichia - - - - - - - . - - - -218 



Eiiteletes -- 214 



List of (tenera and Speciep ---------- 900 



Supplementary Note on the (tends ORTHif! - 227 



BiLLING.SELLA - - - - - - - - - _ . -93() 



Protorthis - - - -.- - - - - _ . _ .)._j| 



Clitambonites ------- 233 



Polyt(ec:uia ----- 239 



ScENiniDM -------- 241 



Orthidium 244 



