322 



SHELLS AND SHELL-FISH. PART II. 



ScAPHULA Sw. (fig. 87- 6.) Spire very shorty thick, ob- 

 tuse, and not defined ; aperture very wide, with only 

 two or three obHque plaits at the base. 



S. patula Sow. Tank. Cat. 2331. (6.) 



HiATULA Sw. {fig. 87. «.) General shape of Oliva ; but 

 the upper part of the pillar is not thickened ; the 

 lower tumid, and marked with a few oblique plaits ; 

 the aperture wide, the base effuse. 



Lamarckii. Zl.Il. ii. p.78. f.l. maculosa. lb. 78. f. 3. 

 pallida. lb. 78. f. 2. ? striata. lb. pi. 40. f. 2. 



OlivellaiSw.* {fig. 87. e.) Oliviform; spire (typically) 

 rather produced ; the tip acute ; inner lip not thick- 

 ened ; outer lip straight ; base of the pillar curved in- 

 wards, and marked by two strong plaits ; upper plaits 

 obsolete or wanting ; aperture eflPused at the base only, 

 biplicata. Tank. Cat. 2332. eburnea. Zool. 111. ii. 58. f. 2. 

 purpurata. Zl. 111. ii.. 58. f. 1. conoidalis Lam. No. 57. 

 mutabilis Saj/. oryza Lam. No. 62. 



SuB-FAM. 4. ANCILLARIN^. 

 Shell oliviform, highly polished ; aperture very effuse ; 

 suture concealed by enamel; base with one or two 



* The union of the Volutidce and the Turhinellidce is so intimately 

 effected by Olivella biplicata and PseudoUva plumbea {see fig. 3. p. 82.), that 

 the two plaits on the pillar of the former shell alone separate the two 

 families. 



