652 



9. Circe NUMMULiNA (pi. cxxxviii. f. 27). Cythersea num- 

 mulina, Lamar ch, no. 58. 



Cir. testa C. scripta seu C. undatince simili, sed costulis diver- 

 gentibus omnino radiata. 



This may possibly be a mere variety of the preceding, with the 

 diverging rays spread nearly all over the shell. 



Locality unknown. Mils. Cuming. 



10. Circe tumefacta (pi. cxxxviii. f. 28, 29, 30), Soioerhy, 

 jun. 



Cir. testa subventricosa, subobliqua, marginibus medio subro- 

 tundatis, prope umbones inflata, leviter divaricatim costata; mar- 

 giue dorsali declivi, subcomplanato ; lunula complanata ; colore 

 albido, plerumque rufo-scripto. 



Shell a little more oblique and ventricose than C. tmdathia, 

 with a greater tendency to swell near the umbones, which are 

 slightly ribbed. 



Locality unknown. 



11. Circe PLiCATiNA (pi. cxxxviii. f. 31, 32). Cythersea 

 plicatinai, Lamarck, no. 71. 



Cir. testa subventricosa, subobliqua ; marginibus subrotundatis ; 

 costis concentricis magnis, nitentibus, subcomplanatis ; lateribus 

 prope umbones divaricatim costatis. 



Shell shaped like C. tumefacta, but with the concentric ribs 

 broad, shining, and a little flattened. 



Indian Ocean and I^ew Holland. 



12. Circe rivularis (pl.cxxxix. f.46, 47, 48), Menhe, ? 



Cir. testa complanata, alta, superne subangustata, alba, rubes- 

 cente, vel pallid e lutea vel fusco late radiata, intiis rosea ; mar- 

 gine dorsali declivi, crenulato ; costis distantibus, irregularibus, 

 interstitiis complanatis. 



Shell flat, high, rather narrow towards the umbones, pinkish- 

 white, or yellowish, or pale brown with broad sulFused radiating 

 bands of brown, pinkish within, ribs distant, with flattish inter- 

 vals ; lunule and dorsal area flattened, marked and crenulated by 

 the few diverging ribs near the umbones. 



New Holland and Eain's Island. Captain Ince, R.N. 



13. Circe RUGiFERA (pl.cxxxix. f. 44, 45). Cythersea ru- 

 gosa, Lamarck, no. 70. Venus corrugata, Billwjn. 



Cir. testa subcomplanata, postice subangulata, polita, prope 



