206 CLASS III. GASTEROPODA. ORDER VII. PECTINIBRANCHIATA. 
towards the upper part, is often extended above the spire, and more or 
less deeply sinuated at the lower part near the canal. The operculum is 
small, horny, and attenuated anteriorly. 
Examples. 
Pl. CCXLIX. Fig. 1. 
Stromsus Tuersires*, Gray, MSS., British Museum. Sowerby, Jun., 
Thesaurus Conchyliorum, Part I. pl. 10. f. 109. 
Pl. CCL. Fig. 2. 
Stromsus Nova ZeLranpi£, Chemnitz, Conch., vol. x. p. 210. pl. 156. 
f. 1485 and 1486. 
Strombus auris Diane, var. Nove Zelandie, Solander. 
Strombus Pacificus, Swainson. Sowerby, Jun. 
PL CCL. Fig. 3. 
Srromsus Peruvianus, Swainson, Zoological Illustrations, pl. 10. f.110. 
Sowerby, Jun., Thesaurus Conchyliorum, pl. 10. f. 110. 
Pl. CCLI. Fig. 4. 
Srromsus auris Diana, Linneus, Syst. Nat. (Gmelin), p. 3512. Chem- 
nitz, Conch., vol. x. pl. 156. f. 1487 and 1488. 
Pl. CCLI. Fig. 5. 
STROMBUS VARIABILIS, Swainson, Zoological Illustrations. Sowerby, Jun., 
Thesaurus Conchyliorum, pl. 6. f. 9, 13 and 14. 
* Only four specimens of this remarkable shell are known in this country, and we are not 
aware that it exists in any other. The best of these, represented in our plate, is in the col- 
lection of H. Cuming, Esq.; the second is in that of Miss Saul; and there are two in the 
British Museum. ‘ 
