FISSURELLA 



Kg. 8. 

 Au interesting variety of Sp. 3. F. neglecta, in which the 

 shell is delicately tinged with pink in the absence of the 

 olive-sTeen colouring. 



For Sp. 



PI. IV. 



Species 9. (Mus. Cuming.) 



FissuRELLA PHLCIIRA. Fiss. testd oblongo-ovatd, aniice 

 attennntd, crassiusculd, convexo-clepressd, conceidrice 

 tenuistriatd, orificio oblongo, lateribus medio excava- 

 th; pwrpnreo-cinerascente, purpweo-rvfo circa ori- 

 ficium lentiginosd, radiis ntfo-purpureis subolscure 

 pictd. 



The beautiful Fissurella. Shell oblong-ovate, at- 

 tenuated anteriorly, rather thick, convexly depressed, 

 conceutrically finely striated, aperture oblong, sides 

 excavated about the middle ; pui-ple-ash, spotted 

 with purple-red around the orifice, and obscurely 

 painted with rays of the same colour. 



SowERBY, Pro. Zool. Soc, 1834, p. 124. 



Hab. Valparaiso (on the rocks) ; Cuming. 



The pui^ple-red fi-eckled painting around the orifice is a 

 very characteristic featm-c in this species. 



Although the two specimens figured present such a 

 difl'erent aspect, they are varieties of the same species. 



Species 10. (Fig. 10 and 12, Mus. Cuming.) 



Fissurella limbata. Fiss. tesid oblongo-ovatd, aniice 

 vix attermatd, depressiusctdd, laleribm interdum pau- 

 lulum compressd, lavigatd, lineis concentricis incrementi 

 plus minusve distinctis, orificio oblongo, lateribus medio 

 subcoarctatis;cinerascente-albd,purpureo-roseoradiatd, 

 interdum purpureo-carned, obscure radiatd, nigro circa 

 aperturam tinctd, limbo lasalipurpureo-nigro. 



The margined Fissurella. Shell oblong-ovate, slightly 

 attenuated anteriorly, rather depressed, sometimes a 

 little compressed at the sides, smooth, concentric 

 Hnes of gi'owth more or less distinct, orifice oblong, 

 sides slightly contracted in the middle ; ash-white, 

 rayed with purple-rose, sometimes purple-flesh colour 

 stained with black around the aperture, basal margin 

 pm-ple-black. 



SowERBY, Pro. Zool. Soc, 1834, p. 133. 



Hab. Valparaiso (on the rocks) ; Cuming. 



Autrust. 



Species 11. (Mus. Cumiug.) 



Fissurella mora. Fiss. testd ovali, elevatiiisculd, 

 crassd, conceiitrice striatd, liris obsoletis radiatd, ori- 

 ficio ovali, margine excavato ; purpureo-nigrd, fascvis 

 concentricis, lineisque numerosissimis subtilibus radian- 

 tibus, saturati tiiictd, Umbo basali cinerascente. 



The black Fissurella. Shell oval, rather elevated, 

 thick, concentrically striated, and radiated with ob- 

 solete ridges, orifice oval, with the edge excavated ; 

 purple-black, stained with dark concentric bands and 

 numerous fine radiating lines, basal margin pale-ash. 



Lesson, Voy. de la CoquQle, p. 412. 

 Fissurella violacea, Eschscholtz. 

 Fissurella graudis, Sowerby. 



Hab. Valparaiso and Island of Chiloe (attached to the 

 under surface of stones on the shore) ; Cumiug. 



The colouring of this fine species is of a purplish inky 

 hue, nearly black. 



For Species li 



Species 13. (Mus. Cuming.) 

 Fissurella oriens. Fiss. testd oblongo-ovatd, depres- 

 siusculd, radiatim mnltiliratd, liris angustis, crebris, 

 subobscuris, orificio oblongo, lateribics medio excavatis ; 

 cinerascente, purpureo-nigro radiatd. 

 The rising sun Fissurella. Shell oblong-ovate, 

 rather depressed, radiately many-ridged, ridges 

 narrow, close-set, rather obsciu'c, orifice oblong, sides 

 excavated in the middle ; pale ash, rayed with purple- 

 black. 

 SowEEBY, Pro. Zool. Soc, 1834, p. 124. 

 Hab. Valparaiso (attached to rocks) ; Cuming. 



This species approaches certain varieties of the F. lim- 

 bata in general aspect, but may be readily distinguished 

 by its more depressed growth, and obscure sculpture of 

 ridges ; and the orifice is broader. 



M. D'Orbigny very erroneously quotes this as a syuo- 

 nyme of F.picta. 



1849. 



