312 PROCEEDINGS OF THE MALA.COLOGICAL SOCIETY. 



lighter towards the margins ; both extremities are of a pure shining 

 white, the posterior one having a white blotch extending from the spire 

 almost to the outer margin. The dorsal surface is of a very pale 

 brown, profusely sprinkled with small, deep brown spots intermingled 

 with minute ones of a pure white, the pittings and sides above them 

 on each side of the shell being of a beautiful purplish tint. Long. 29, 

 cliam. 18 mm. 



B'ab.— Tahiti. 



I have only seen two specimens of this variety ; that here described 

 in my possession, the other, slightly smaller and from the same 

 locality, now in the collection of M. Dautzenberg. 



2. CYPEiEA MONETA, LiuU., Var. AUEKA. 



Shell of typical form, teeth slightly finer, dorsal surface entirely 

 suffused with a deep golden orange extending over the margins, where 

 it disappears on the base ; base white. Long. 25, diam. 18 mm. 



mib.— Tahiti. 



3. Cypk^^a aeabica, Linn., var. prasina. 



Shell of the usual form and dentition, but entirely suffused with 

 green, covering the dorsal surface and margins and extending over the 

 base nearly to the aperture. This peculiar green coloration is probably 

 caused by a disease of the mantle. 



ITab. — Sandwich Islands, Labuan, New Caledonia, etc. ; occurring 

 with the typical form. 



This is a well-known variety, mentioned by several writers, but 

 appears never to have received a varietal name. 



4. Trivia ovulata. Lam., var. rubra. 



Shell differing from the ty[)ical white form in having the interior 

 and the whole of the dorsal surface of a deep rose colour. The 

 outer lip and base are white. This is a common variety of the 

 above species, and specimens are frequently only slightly tinged 

 with rose colour. 



Mah. — Jelferys Bay. 



Good figures of this variety appear in Sowerby's Thesaurus, 

 figs. 409-11. 



1\ ovulata Avas originally described by Lamarck in the Ann. du 

 Mus. as C. '■ovulata.'' In the Anim. sans Vert., 2nd ed., vol. x, 

 p. 533, probably from a typographical error, it appears as ' ovula.^ 

 Reeve (Conch. Icon., sp. 112) gives the following note: " Cyprcsa 

 '■ovulata'' was the first name given to this shell by Lamarck, but 

 finding probably that it had been already used by Grmelin in reference 

 to the C. cervus he dropped the last syllable for the sake of 

 distinction, though both terms are sufficiently corrupt." If Reeve 

 had referred to Gmelin's species, he would have found that it was 

 oculata and not ovulata. It is therefore obvious that the species in 

 question must be known by its original appellation, ovulata, and 

 not ovula, as favoured by some writers and monographers. 



