352 SHELLS AND SHELL-FISH. PART II. 



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. f. 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. Stv. Sow. Gen. 

 undata. lb. 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. 



