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CONCHOLOGY. 



3. Genus Voluta. PI. XII. 



Animal. Oval, involuted, provided with a very broad foot ; 

 head very distinct ; tentacula rather short and triangular ; eyes 

 large, altogether sessile and situated a little posteriorly ; a thick 

 trunk furnished with hooked teeth at its extremity ; two pectini- 

 forra branchiae. 



Shell. Oval more or less ventricose; the first whorls of the 

 spire rounded into a teat ; aperture generally much longer than 

 wide and sloping anteriorly ; the right edge bent outwardly, 

 entire and soft ; the columellar edge garnished with large folds 

 more or less oblique, and slightly varying in number with age. 

 Found chiefly in the seas of the Torrid Zone. Forty -four species. 



Voluta nautica. 



V. armata. 



V. tesselata. 



V. cymbia. 



V. proboscidalis. 



V. diadema. 



V. ducalis. 



V. Neptuni. 



V. oUa. 



V. porcina. 



V. pellis-serpentis. 



V. chlorosina. 



V. polyzonalis. 



V. magnifica. 



V. Magellanica. 



V. fulminata. 



V. scapha. 



V. mitis. 



V. Braziliana. 



V, Guinaica. 



V. undulata. 



V. festiva. 



Voluta yEthiopica. 



V. imperialis 



V. vespertilio. 



V. musica. 



V. levigata. 



V. nodulosa. 



V. ancilla. 



V. Pacifica. 



V. .funonia. 



V. melo. 



V. Hebraea. 



V. serpentina. 



V. carneolata. 



V. fulva. 



V. nuclea. 



V. lapponica. 



V. volvacea. 



V. mitrseformis. 



V. nivosa. 



V. thiarella. 



V. sulcata. 



V. vexilla. 



4. Genus Marginella. PI. XIT. 

 Animal. Oval, involuted ; foot elliptical, very large, and widest 



