^^^ MOLLUSCA. 



Whorls, render the margin undulated; the inferior whorl is ample 

 and ventricose. Montfort subdivides them into 

 ^ DoLiuM properly so called, where the lower partof the columella 

 IS twisted(l), and mto 



Perdix, where it is trenchant(2). 



Their animal has a very large foot, widened before; a proboscis 

 longer than xts shell, and slender tentacula, on the external side of 

 vvhich and near the base, are the eyes, the head has no veil, nor has 

 the toot an operculum. 



Harpa, Lam. 



rib^t fh"'''? 'r T"' '"g"i^^<l l-y '1'^ projecting, transverse 

 nbs on the whorls; the las, of which forms a lip on the margin. 

 The shell ,s beaut.ful, and the animal has a very large foot, poinld 



by wo deep emarg.nattons. The eyes are on the sides of the tenta- 

 cula, and near their base. It has neither veil nor operculum; 3). The 



Purpura, Brug. 

 Is known by its flattened columella, which is trenchant near the 

 end opposite to the spire, and which, with the external margin 

 forms a canal there, sunk in the shell, but not salient. The P -' 

 pur. were scattered among the Buccina and the Murices of Lin- 

 naeus. The animal resembles that of a true BuccinumC4). 



si JiJarTth "^p"'"' ^^-^^'-MoNocKRos,Lam., consists of shells 

 s milai to the Purpura, but in which the external edge of the emar- 

 gination is furnished with a salient spine(5). 



Others, also resembling the Purpura, in which the columella or 



galea, Ust89S18-,--B.dohurn,Ust, 899, 19 -^-B. fascialum, Bru^. Mart ITT 

 cxviu, 108l;-B.pomuvi, Id., II, xxxvi, 370, 371. ^ ' ' 



(2) Bucc. perdix. List. , 984, 43 



iu/u, iu., yo, 4,s H. trochlea, B. lamlhi') M\ a^t: 10 in t,^ 



Id. 990, 50.,-Mar.kistn., Martini, lit c!" zl^rt' W ' '^l-f '"^^ Z^-' 

 7, 8. 957 q_in ?i^ 2.' ' ^^^5; .'J/ar. mancinella,Ust., 956 



r ; 1 9-105-^'-- hippocastanum. List., 955, 996, 990, 991 



(5) ^Mccmwm TO07io(/ora, Gm Martini TTT .- t^-, -n 



