172 FISSURELLA. 



alt. 4 mill. Transition forms connecting with the radiately painted 

 specimens occur. 



Table Bay, False Bay and the Natal Coast. 



F. mutabilis Sowb. P. Z. S. 1834, p. 127 ; Conchol. Illust., f. 67, 

 70.— Reeve, Conch. Icon. f. 43 a, b.— Sowb. Thes., p. 190, f. 70, 

 79, 93. — Krauss, Die Siidaf. Moll., p. 65. — F. sagittata Reeve, 

 Conch. Icon. f. 34.— Sowb. Thes. Conch, p. 201, f. 83. 



The above is mainly taken from Krauss who collected and ex- 

 amined great numbers. It is a very variable species, as I see by the 

 few specimens before me. Sowerby considers F. incarnata a syn- 

 onym. 



I take F. sagittata Reeve to represent the second or marbled vari- 

 ety of Krauss. It is figured on pi. 30, fig 2. The shell is radiately 

 striate ; rayed with pink, and has dark arrow-shaped flecks and dots. 

 Were it not for Krauss' insistence on the identity of the two forms 

 of mutabilis I should consider them distinct species. 

 F. catillus Reeve. PI. 30, fig. 5. 



Shell oblong-ovate, rather thick, a little compressed at the sides, 

 obscurely decussately ridged, ridges somewhat rude, almost faded ; 

 orifice ovate, rather large ; pinkish, rayed with dull white. This 

 specimen is unicolored around the base, which is not likely to be a 

 character of the species. (Rve.) 



Java. 



F. catillus Rve., Conch. Icon. f. 91.— Sowb., Thes., p. 191, f. 81. 



F. rota Reeve. PL 39, figs. 99, 100. 



Shell ovate, rather depressed, radiately obscurely obtusely ridged, 

 ridges decussated with concentric grooves ; orifice elongately oblong, 

 a little contracted at the sides ; olive-brown, conspicuously white- 

 rayed, rays blotched near the margin with brown ; pink around the 

 orifice. (Rve.) 



Cape of Good Hope. 



H. rota Rve. Conch. Icon. f. 79, 81, 1850.— Sowb. Thes. p. 191, 

 f. 72. 



F. t^niata Sowerby, Jr. PI. 59, fig. 41. 



In form resembling F. mutabilis, but without strise . and marked 

 by eleven pairs of brown rays. (Sowb.) 



Cape Verde Is. 



F. tceniata Sowb. Thes. Conch., p. 191, f. 77. 



