INDEX TO PIfOLAS. 



acuiu inata, Soweihy V. 



aperta, Sowerhtj IX. 



Australasiffi, Gray III. 



Bakeri, MS XII. 



branchiata, Gould V'l. 



hTevis, Sowerb;/ \'II. 



callfoTmcii, Conrad V. 



calva, Soirerhy \' . 



Campechmnis, GnxeWn II. 



Candida, LiniKeiis 1. 



Chiloensis, AVw^f II. 



clausa, Gray VII. 



clavata, Lamarck VIII 



concamerata, Deshayes X . 



conoide.1, Flem \"III 



constricta, Soiverby III. 



corticaria, &'i'(j^ \ II. 



costata, Linnceiis 1 



crispata, Linnceus III. 



crucifera, Soiverby I\'. 



Cumingii, .S«'('(';-Jv XI. 



cuneiformi.=, Sny IX. 



curta, Sowerhy V. 



dactylus, Liiinceus II. 



Darwinii, Sowerhy iV. 



erythraea, Grny XII. 



falcata, Gray .\II. 



iragiWi, Sowerby III. 



globosa, Q?(oy XI. 



(Ir.-iyaiKi, harh XII. 4r, 



Incei, Suwerby VIII. :;0 



laqueata, Sowerhy 1 \' . 1 ;! 



latissima, (So;fvv% \. 17 



ligniperda, i>«s/«(//e,« XII. .'id 



%nor»m, Spengler \'III. '.V^ 



Manillffi, ^'o;m% Vlll. ;', 1 



melanura, Soirerby \'l. i':; 



multistriata, .S""', ;A// IX. :;7 



«a««, Pulteiiey \'I1I. ;;2 



ohtecta, Sowerliy IX. .'f.'i 



orientalis, Gmelin II. .''i 



nvMa, Gray VII. !'!• 



ovoidea, Gould XII. I '.» 



papyracea, i('n?i«Ms X. 40 



parva, Penn 1. '.'> 



pnlcherriina, .S'r)»'«'4!y XI. 14 



/jMjitV/n, Linnajus VIII. ;!2 



quadra, 5o»w6!/ VII. ".'(I 



(juadrizonalis, >Sy)CT9/cr IX. ;i,S 



vWicoVa, Soiverby '. VI. •>•> 



snniicostata, /,fac/( VI. '.'1 



similis. Gray III. Id 



spatliuiata, .Soioerty XI. 1.') 



striata, /^i«nfp»s VIII. ;!2 



t,crvdmxfarm\&, Soiverby IX. 'M 



tridons, 6Vny X. ;i.s* 



truncata, iS'«y IV. 14 



tubifcr, Sowerhy X. oV 



K R K .\ T U :VI. 

 Plate IX.. species 38, text, — for qnadrgionalis read qua<lrizonali 



