322 



SHELLS AND SHELL-FISH. PART II. 



SCAPHULA Sw. (fig. 87- 6.) Spire very short, thick, ob- 

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

 two or three oblique plaits at the base. 



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



HIATULA Sw. (fig. 87. a.) 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. Ib. 78. f. 3. 

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



OLIVELLA^W.* (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 effused 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 Say. oryza Lam. No. 62. 



SUB-FAM. 4. ANCILLARINJE. 



Shell oliviform, highly polished ; aperture very effuse ; 

 suture concealed by enamel; base with one or two 



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

 effected by Qlivella biplicata and Pseudolivaplumbea (see Jig. 3. p. 82.), that 

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

 families. 



