MM 



MI. N LITTORIN1L 



Animal I'l 



Ion--, evlindrieal. with eye* mi -mail u**' t 



t'.M.i aiiteri>rilv truncate. IVni- \\ell i|. 



tentacle ; reproduction ovipai'oll- in , 



and narrow. 21*1*1*2 I'l I" 



Shell -piral. turltinate or _'l"!>ular. DOl 

 rounded, entire, lip simple, colnmella tlii.-k- 

 cnlnni IM. I" paueUpiral. 



Keen IIH.llo-r.-iphed l)\ Kecvc. ill ( SODOhol 



ter and \\'t'inkanH', in iln- ( 'onrli\ i 



EM UTTnlMNA 



Slu-II iinpi-i-t'oratr. turlmiatr. usually tlii-k : aprrfniv 

 <Mitrr lij> acute, colnniclla railu-r flath n.<|. 



..litnsc l.chind. longitudinally divided. M that in \\alkin- 

 each side advan'e- altc-rnat-ly. T! inlialtit tin- >ea. l>rack- 



i>h. ir .-imictime.- even t're>li \\ater. and ar- n 



mi :;l 9 nf !' t lie >j>cri- aiv t : . and 



they are aU.. e\teii-i\rl\ -atli'-red t'..r liail. 



the periwinkle ifl t\vor three linn- the length of the bod 



animal: it> canal paaB6B 1'n.ni the l.a.-k of the nintli n 



M-snpha^u- t'..r a -In.rt di>tan<v. tlien turn- 11: 

 tenninate> in a cuil n-tin- .-n the plaited j 

 cuntain> aliDiit '' ( "> r"\v- 't' teeth. 



The l.ot-km.wn species, /.. Kttaiw n tli- 



hern |-!nni|M-. and i- al-- rapidly e\te: 



<m mil- New Kn-'laiM ar- t" i D re- 



cently introduced. 1'." nally in 



the L.mdon market, einjilnyini: a thn-and JHT-"II.> in L'atl 



It is -extenaively distributed !> Mn^li-h 



Thi- and other lar-f -I amphi 



livii: ;-! irrasses v washed l>y tiie : 



tide: t In v \\ ill cMn-i-.jiient i nd depi 



id; and -'Veral -; \Ve-t 1 1 1 d i a 1 1 *peCte0 6ziste< 1 



ir in my cal.i 



Ah-. nt l.'iu-peeie- liave l>een generally adm i 1 1 cd . i nh a hi t i n _: a 1 1 



part- lit' the L'lol.e. I'. Mil, they are rat : roils, commencing 



