NKUITID.E. 



th* s*.a>ey 



U**U4teta. TUMiifeBawaiartawbrsadbti 

 saw. Ikr* r* part rf Unr Uf. ot of th* wmtar 



BssWvieg ft* B*)blBM* frvSB il> Tsw** wWOB laVBBt 4ne 



of oo* oi the** 

 , tb*y say, perbap* 



ey sit an to th* t*a of trees. bl without gab* on bad. 



Mat er* fawd OB bed are oaitiod there by P*mn or by some 



Merle* X*rH* era also MM *t tU mouth of riven ; od 

 VNT Md OaisMHracaark that UMM are transitions which 



extonsirWy 

 ilawHmibli1 oper- 

 on iu Knight 



MM U. UM Aril tmtbr Ihiek at tkt aperture, 

 d bsed** oator Up nntti ineer straight. ilaw 

 sk-lly. with fertbbboroW, alicfatly toothed 



he> lh* slMU onto, alkhtly itriaud, blackish brown ; 

 l^ dibud. thiB. whit, within. til. martin aeuU, th* inner 

 ***; Ik. ta*r lip touUMd. (Urn.) 

 ae* liioiii b uniform chestnut, with tie strut of growth 

 UMM woverje oa the ipire, which b covered by the 



I IUM be dWkaU UnUcb*, which an yellowish soiled 

 wfchbrowm. Th* kad iad rid of Ih. foot u jrdlow, ipottod with 

 dbW*. TW <u<Ur put of th. foot U nddbh. 



colour, with bUck trn- 

 the pir : iU contour hu 



TV. ini^lai i. Urgs of u 

 m hud* praoMliaf to coorcrj 

 nMbhbM. cAjroUbe.') 



U.. pmlliftr*. 

 , tk*Q *4 ulaal ; , opemlan. 



Tfc. dnwta froci which Mam Qoor ind O^mud h*ve figured 

 tMMriMWM>Md.MUiMta hi ttebbnd of Ouun. They iUte 

 UM*lW. ! Mrikt fdK^ro U Vanikoro. The, found on the 

 UM. 4~.l ibelU whew .pir WM alwmyi oorroded, ud they inquira 

 w(Wthn ~I * bfw*bt then, or wb^Wth. aoimal hd died 

 4kerk.wtec eMMM the feet Tn*y UU w a ranarkabU (act, 

 Ifcet ta) a pia* maber of todiridoal* of lh apedei they found in 

 la. iwr a eawU knot of worms BOOM of which went not le than 17 

 y *!** T*^ **n poiatod at both end*, lik. Lumlnici, or 



ka the aMI limpH-lik. aborr, with a luboentnl apci; 

 '. Ul a null BwaUuiar apartura, and a oolumellar 

 i.! b^abtoad eootiMemi periBtotn*. Th. aperiei an 

 mjr fciw m fceA 



OvMre* of 100 nwmt epedei of .Vr* and TO ipedet of AVritiM 

 km BMB Jaaa.J. The (bed enotei of .Vtrita amoant to 60, and 

 *** .Vrta b foBd in th. Lb% and AW MM in the 



feefcifc, WMhlfceeaeeptioaof the dbpoeHtoo of iUoperculum 

 Md lef ih. mmdm of atteahaemi to the eVn,th aalaal ^1 bo *aid 

 ft. Wyerty eWler to that of AW* Iu h*ed b Urga, oonru, 

 et*ed.a UUfa BarieBbtod anterioriy. carrying two ton? Bad Ty 



CSS? W 2T l TL*" rta *" 7" * "* b "." JC ^oof-Ud 

 webV. Th. feet b r*(ulariy oral, and don not orerbonUr th. 



" " ** " t-fa ' "~ lto "**< H PeBwk' 



. |I -.:,v~i 



*^^*^?*'i* < 77 > ?** * BiAv-drlbUr.lV it b 

 bH* Iu tower BBriaea, fr OB iU upper rartac., and 



to W 



iMof IU becth, tethe tU-rJ 

 Ale wbkh e.^ke ft ; wUM. M remlu tbet thepeiwlM 



>- B ewt of pMA rft^d b*w*1h7foc4 andb. 



Thbdbpeettb.ef UM 



of th. yevtceUav atyi If. Da BUiurille, prerenU it from really wiring 

 th* ordinary porpoM of one. 



A'. aUi/rfico. Shell orate, elliptical ; sub^pidcrmui greenlxh-browu, 

 mootb, "M" 1 ^ aqoamouily tpotted with white and cterulean ; the 

 apex recurred, tubprominulate beyond the margin. (Lam.) 



The number of Bpedei of ffavietUa (all recent) recorded u 20. 



.\ritella elliptica. 

 a, animal in the hcll, wen from below ; b, operculum. 



The genui A'a/tca, nometimes made the type of a family (.Valiciiltx) , 

 hai been included with the Neritidte. 



Uaein. Quoy and Oaimard remark, that the A'ottctt are animals to 

 which their foot give* a remarkable aspect. It U a long oval lamella, 

 ordinarily squared in front, oval behind, and doubled; anteriorly, 

 when it U widest, it U a thick escutcheon, a little uuriculated, which 

 ascends on the front of the shell, which it covers, at the samo time 

 that it hide* all the head of the animal, of which ordinarily nothing 

 but the tentacle* appear ; a groore on each side indicates the two parts 

 of the foot 



The posterior escutcheon, which is less considerable, supports the 

 operculum, which it OTerborders in order to cover the left lip and the 

 extremity of the shell There are individuals in which it hiis the 

 same sixe as the foot, from which it is distinguished by a circular 

 groore. Thus, observe these zoologist*, throughout their development 

 the A'o/iccr resemble a mas* of flesh, on the summit of which one 

 a part of the shell. The operculum, although very large, U 



not apparent ; placed transversely, it is hidden by the extremity of 

 th* shall, which contains the mass of viscera. A very small muscle 

 binds all this development of flesh to a rather slight columella. The 

 rest of the animal, which is but slightly spiral, offers nothing remark- 

 able. 



N. mdanoiioma has the shell oval, ventricose, convex-depressed 

 thin, white, zoned with yellow ; spire somewhat prominent ; Up 

 blackish-brown, umbilicus semi-closed. (Lam.) Length 15 lines : 

 breadth 114 link 



Operculum membranous; paucispiral on the left border; the rest 

 of it* lamella obliquely transverse. Colour deep chestnut-brown 

 lighter oo th.*dg* 



.\altca mtlanotloma. 



*, shell wllh animal *t*a from store ; ft, animal out of the shell ; r, opcr- 

 culam. 



It has been found at Tonga, the Moluccas, and many other places. 



Found by Messrs. Quoy and Oaimard some fathoms deep. Species 

 of the genus have been captured creeping on the shore like the Nerits 

 on rock* and sea- weed, and from the surface to the depth of 40 

 fathoms on mud and sandy mud, in actuaries and in tidal rivers. 



