124. 



all traces of coloured rays. The younger shells, ■vvhich retain the 

 coloured rays, are found in exposed situations at low ■vvater. 



A representation of the inside of this shell has been given in my 

 ' Genera of Recent and Fossil Shells', under the name of Fiss. pieta, 

 Lam., fromwhich it is nevertheless very distinct. 



Found on exposed rocks. — G. B. S. 



FissuRELLA BiRADiATA (Frembly MSS.). Fiss. testd ovaid, an- 

 tice subacuminatd, elevatiiisculd, crassiusculd ; intUs albd, mar- 

 gine latiusculo, purpurascenti-fusco ; extils radiatim striatd, pur- 

 purascenti-fuscd, plerumąue radiis duobus (utrocue latere unico) 

 pallescentibus ; aperturd dorsali oblongd : long. 3 '8, lat.2'1 poli. 



Hab. ad Valparaiso sub lapidibus littoralibus. 



In this, as well as in several others, the margin varies some'vvhat in 

 \vidth ; it is, however, generally broader in the youDg shells. The 

 fuUy grown specimens sometimes lose the two light- coloured rays. 



Found also at Iquiqui in Peru. — G. B. S. 



FissuRELLA LATA. Fiss. tcstd ovalt, elevūtiusculd, crassiusculd; 

 intiis albd, margine latiusculo, pallescente, rosaceo-maculato ; ex- 

 tiis cinerascente, radiatim costellatd, costellis subtuberculatis, ra- 

 diis coloratis purpureo-rufis ; aperturd dorsali ovato-oblongd : 

 long. 3 3, lat. 2-5 poli. 



Hab. ad Insulam S. Marise, Chilensis. 



This species approaches, in form and colouring, very nearly to 

 Fiss. pieta, Lam. 



Found in exposed places. — G. B. S. 



FissuRELLA puLCHRA. Fiss. tsstd ovato-oblongd, depressd, antice 

 angustiore, crassiusculd ,■ intiis albd, margine latiusculo, subundu- 

 lato, purpurascenti-fusco ; extus purpureo-cinerascente , radiis 

 rufo-purpureis maculisque albis et violaceis concinne pictd ; aper- 

 turd dorsali eentrali, postice inelinatd : long. 25, lat. 16 poli. 



Hab. ad Valparaiso. 



Obs. Testą junior radiatim subcostellata. 



Variai testą totą extus purpurascenti-fusca, unicolore. 



Found on the rocks. — G. B. S. 



FissuRELLA oriens. Fiss. testd ovato-oblongd, depressd, crassius- 

 culd ; intiis albd, margine angustiore, jjlerumgue jjallescente ; ex- 

 tits pallidd fusco nigro vel roseo radiatd ; aperturd dorsali ob- 

 longd, mediane latiore: long. I'l , lat. I' 6 poli. 



Hab. ad Insulam Chiloe sub lapidibus httoralibus. 



Variat testž extus obsoletė pieta, margine intemo paull6 latiore. 

 Hab. ad Valparaiso, rupibus adhserens. — G. B. S. 



FissuRELLA Chilensis. Fiss. testd ellipticd, depressd, radiatim 

 costellatd, costellis rugosis ; intiis albd, margine lato, pallescente, 

 nonnunguam fusco maculato; extils cinerascente, radiis f uscis pal- 

 lidis plerumque pictd ; aperturd dorsali oblongd, subeerūraU : long. 

 2-4, lat. 1-8 poli. 



Hab. ad Valparaiso. 



Found on rocks in exposed situations at low vvater. — G. B. S. 



