PART II. 



OLIVIX.^. 



321 



times papillary ; aperture without either striae or 

 groove. 



monodonta. Zool. 111. ii. 128. f. 1. terebellum. lb. f. 2. 



CoN(ELix Sw. Small ; cylindrical or conic ; spire ge- 

 nerally short and thick ; plaits on the pillar nu- 

 merous ; exterior often decussated. 



C. conulus. En. Meth. 382. f. 2. 



MiTRELLA Sw* Rather small; olive-shaped; 

 unequally fusiform ; always smooth and 

 polished^ and sometimes covered with an 

 epidermis ; base obtuse and effuse ; spire 

 nearly or quite equal to the aperture ; 

 plaits of the pillar few_, oblique^ and ex- 

 tending beyond the aperture^ which is 

 smooth internally. (M. bicolor, ^^. 85.) 



ocellata. Zl. 111. v. pi. 54. f. 2. olivaeformis. Zool. 111. i, 

 fissurata. En. M. 371. f. 1. ii . 54. f. 3. 



casta. Zool. 111. i. pi. 48. fusca. lb. ii. pi. 54. f. 



bicolor. Ib.ii. 19. f.2. (Jig. 85.) dactylus. En. M. 372 

 olivaria. En. M. 371. f. 2. 



pi. 48. 



1. 

 . f. 5. 



SuB-FAM. 3. OLIVINiE. Olives. 



Shell smooth^ highly polished ; spire very short ; the 

 suture channeled ; inner lip much thickened ; plaits 

 numerous, crowded, extending, in the typical genus, 

 the whole length of the aperture, (fig. 86, 87.) 



Lamprodoma Sw. Mitriform ; spire pro- 

 duced, conic; resembling^jTzYreZ/a in shape, 

 but the suture is channelled ; the aperture 

 effuse at the base, contracted above ; lower 

 half of the pillar with 6-7 plaits, 

 volutella. Zool. 111. ii. series, pi. 40. f. 1. (fig.86.) 



Oliva Lam. Cylindrical ; spire very short, 



pointed; pillar with numerous slender plaits ; aperture 

 narrow; the base not effuse, {fig. 87. c.) 

 O. maura. Sow. Man. f. 457. 



