352 'SHELLS AND SHELL-FISH. PART n. 



lengthened; body -whorl comparatively smaller; base 

 of the pillar with a slight angle, or an obsolete tooth ; 

 aperture smooth, very brilliant; passing into Calli- 

 ostomus. 



E. Iris. Mart. 161. 1652, splendidulus. Sw. Sp. Nov.* 

 1653. (fig. 109. a.) 



Echinella Sw. Shell imperforate, granulated, not per- 

 laceous ; spire considerably lengthened; pyramidical ; 

 base of the pillar with a distinct tooth ; aperture 

 striated : representing Pagodella. 

 E. granulata. Sw. Sp. Nov. coronaria. En.Meth.447.f.6. 



Monodonta Lam. Turbinated ; in general umbilicated, 

 having a groove below, and a tooth at the base of the 

 pillar ; aperture nearly round, striated within ; um- 

 bilicus never toothed : representing Senecus and Tro- 

 chidon. 



M. retusa. En. Meth. 447. f. 4. 



Fragella Sw. Trochiform ; umbilicus deep, always 

 open, and toothed round its margin ; base of the 

 pillar twisted, and forming a tooth -like process at its 

 tip : representing Trochidon. 



Pharaonis. En. M. 447. f. 7. Sowerbyana. Sw. Sow. Gen. 

 undata. Ib. 447. f. 3. f. 9. 11. (Trochus.) 



Monilea Sw. Umbilicus deep and wide, but the edges 

 quite smooth, with a thickened half margin, formed 

 by the inner lip, which terminates abruptly ; base of 

 the outer lip with one or two tubercles, or obsolete 

 teeth ; margin of the whorls concave ; inner lip 

 often striated : representing Chlorostoma. 

 M. callifera? Lam. Sys. 27. No. 59. 



SOLARIUM Lam. Shell nearly ^discoid, not perlaceous ; 

 spire none ; aperture angulated, smooth within ; the 

 edge acute ; the lips wanting, (fig. 109- i, k.) 

 S. perspectivum. En. Meth. 446. f. 1 . 



ONUSTUS Humph. Shell trochiform ; the surface irre- 

 gular, and often covered with extraneous bodies 



* Small, entirely fawn colour, or light brown ; aperture of the most 

 brilliant purple and emerald green. Australia. 



