OLIVA 



Species 14. (Fig. n, h, c, e, Mus. Cuming ; 

 Fig. d, ilus. Stecre.) 

 Oliv.v Peruviana. Olio, testa ovatd, crassd, r/iMom, 

 postm tumhid, interdiim mnwlntd, splrd breviiiscnld. 



coIumelJd tin 

 piirasci'iiti' 



pt}rat,i ^»pra t„ 



ltd : 



,;it,'-llll:d. 



pin-pii 



•illUlfO 



tongHud'inulUer fiiJ.jin-atd init strnintn-piuictiitd, iiiter- 

 dum immaciduld, inierdimi omiiinu purpiirco-aistaued, 

 cuttmelld alba, apertura; faiice piirpKnixc'iile timid. 

 TuF. Pektjvian Olive. Shell ovate, thick, gibbous, 

 swollen posteriorly, sometimes annulated, spire rather 

 short, columella plaited towards the base, smooth 

 above ; light pm'ple or purplish white, longitudinally 

 zigzag-marked or streak-dotted with pm-ple-chestnut, 

 sometimes unspotted, sometimes entirely purple- 

 chestnut, columella white, interior of the aperture 

 tinged with purple. 

 IjAMarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 017. 



Eadem var. Olim Seiiegalensis, Lamarck. 

 Ilab. Coipumbo, C'opiapo, and Buy of Callao, Peru (in 

 sandy mud, at depths varying IVoni four to seven 

 fathoms) ; Cuming. 

 The specimens selected for the illustration of this 

 species are particularly characteristic of its varieties of 

 painting, in which only two colours are employed. At 

 l^ig. a the shell is purplish-white, unspotted, w hilst that 

 at Fig. c is of a imiform dark purple-chestnut. At Fig. b 

 the chestnut appears in bold distant zigzag stripes uiion a 

 light purple ground, which state of the species was nametl 

 0. Senegalensis by Lamarck, from some erroneous informa- 

 tion of its locality. Fig. d represents a variety with more 

 of the chestnut colouring, broken up as it were into dots 

 and short interrupted streaks ; whilst in the shell repre- 

 sented at Fig. e the chestnut appears in very promiscuous 

 and still smaller dots, overcharged with a general tinge of 

 the same oolom'. 



The form of this species varies in being sometimes very 

 tumid, and produced into a ring towards the spire as in- 

 dicated at Fig. c. 



Species 15. (Fig. a, Mus, Stecre; Fig. b, 

 Mus. Cuming.) 



Oliva Jolieta. OVw. testa ovatd, crassiusculd, medio 

 tiniiidd, delude splram versus atieniiatd, columella mid- 

 tiplicatd, basi callo-w-gibbosu ; luteseente-albd, punciis 

 ijrniidibus nitjricante-fiiscis, ctemleo-nebulatls, iuter- 

 nipte ttiigidati' diipov/is, iindiqne vivide pictd, fiisco 

 ill iiincuti.^ aril mi nil I ix jii.clii suturas, apice pallide vio- 

 tai'cii, biiai iiiiii-iitil viiiliiml obscure tirictd, coliimelld el 

 apertur/f faiice tntescente-nlbis. 



Juliet's Olive. Shell ovate, rather thick, swollen in 

 the middle, then attenuated towards the spire, colu- 

 mella many-plaited, callously gibbous at the base ; 

 yellowish-white, brightly paiuted throughout with 

 large blue-clouded blaek-browu dots, arranged in 

 confused or broken angles, the brown rising in acu- 

 minated blotches next the sutures, apex pale violet, 

 base obscurely marked witii a faint violet blotch, 

 columella and interior ol' the aperture yellowish- 



This beautiful species bears the same relation to (). re- 

 ticiduris, through the variety named 0. vemdata by Duelos, 

 represented at Fig. 16 i in the next plate, as O.notntis 

 has with 0. tremulina. Regarded separately, the allied 

 forms in both instances appear specifically distinct from 

 each other, but it is impossible to deny that there is only 

 one prevailing idea of form and pattern in each. The 

 tyiiieal pattern of 0. reticularis is a net-work composed of 

 brown dots, gathered into lines or acuminated blotches at 

 the sutures. The dots become larger, more confused or 

 broken up, and more conspicuous, as in the variety O. ve- 

 mdata, Duelos ; and the character of this passes by an 

 easy transition into 0. Jidietu, distinguished by the same 

 hieroglyphieal marking at the base, and an indication of 

 the violet blotch which is very characteristic throughout 

 the series. 



