OLIVA.— Plate XX. 



Species 50. (Mus. Cuming.) 



Oliva ecfula. OUv. testa, ollongd, spird hrevi, depress/!, 

 anfractu ultimo ad extrmiitatem posticam apertura 

 calhso-prodiicto, pUcis columellaribus subevanidis ; 

 fuscescente-spadiced, rufo-castaneo oblique faseiatd, 

 lineis obscure diagonaliter decussatd, columelld el aper- 

 ture fauce subspadiceis. 



The reddish Olive. Shell oblong, spire short, de- 

 pressed, last whorl callously produced at the pos- 

 terior end of the apertui-e, columellar plaits rather 

 faint; browuish-fawn, obliquely banded with red- 

 dish-chestnut, and obscurely diagonally crossed with 

 lines of the same colour, columella and interior of the 

 aperture somewhat fawn-tinted. 



DucLos, Mon. OUv. pi. 19. f. 9, 10. 



Hab. Cagayan, Island of Mindanao, Philippines (in sandy 

 mud at a depth of twenty fathoms) ; Cuming. 

 The form of this species is similar to that of 0. maura ; 



but the cross-barred style of colouring is characteristic and 



appears constant. 



Species 51. (Mus. Cuming.) 



Oliva contortuplicata. OUv. testd ovatd, tenuiculd, 

 medio gibbosd, subitifatd, spird brevi, acnmimtd, callosd, 

 apice acuta, columelld valde arcuaid, plicis peculiariter 

 fortiter contortis; carulescente-ffrised, zona aiujustd 

 c.astaned basi cingiilatd, columelld albd, apertura fauce 

 intense castaued. 



The twisted-plaited Olive. SheU ovate, rather thin, 

 gibbous and slightly inflated in the middle, spire 

 short, acuminated, callous, sharp at the apex, colu- 

 mella much arched, plaits peculiarly strongly 

 twisted ; blue-grey, encircled round the base with a 

 narrow chestnut zone, columella white, interior of 

 the aperture veiy dark chestnut. 



Hab. Senegal, West Africa. 



Vei-y remarkably distinguished by a peculiar twisted 



growth of the plaited portion of the columella, above and 



around which is a depressed groove, coloured by the same 



dark chestnut as the interior of the shell. 



Species 53. (Mus. Cuming.) 



Oliva multiplicata. OUv. testd oblongo-cijUndraced, 

 subangustd, spird acuminata, plicis columellaribus sub- 

 tilibus, numerosissimis, aperturd angustd ; albidd, 

 fusco-rubente undique minutisdrrie et eximie reticulata, 

 maculis petpaticis punctisi/ue medio promiscue cingu- 

 latd, linearum maculis infra suturas. 



The maxy-plaited Olive. Shell oblong-cyhndrical, 

 rather narrow, spire acuminated, columellar plaits fine 

 and vei-y numerous, aperture nareow ; whitish, very 

 minutely and delicately reticulated thi'oughout with 

 brown-red, promiscuously encircled round the mid- 

 dle with a few blotches and dots, with blotches of 

 Hues beneath the sutures. 



Hab. ? 



This species is also remarkably distinct, having tlie 



columellar plaits much finer and more nimierous than in 



any hitherto known. The pattern consists of a delicate 



net-work of most elaborate fabric, very similar to that of 



the Conns gloria-maiis. 



Species 53. (Mus. Cuming.) 



Oliva tessellata. OUv. testd ovatd, crassd, spird hrevi, 

 apice acutd, plicis columellaribus latiusculis ; luted, 

 purpureo-nigricante sparsim maculatd, columelld et 

 apertures fatice interne purpureo-violaceis. 

 The tessellated Olive. Shell ovate, thick, spire short, 

 sharp at the apes, columellar plaits rather broad : 

 yellow, sparingly spotted with pm-ple-black, colu- 

 mella and interior of the aperture intense, purple- 

 violet. 

 Lamarck, Anim. sans vert. (Deshayes' edit.) vol. x. p. 020. 

 Ci/lindrus tigrinus, Meuschen. 

 Voluta tigrina, Schroeter. 

 Hab. Island of Ticao, Philippines ; Cumiug. 



This well-kuomr species stands alone in the genus, 

 there being no other allied to it in respect of its charac- 

 teristic style of painting. 



