222 TURBO. 



and I do not know of any others. It may possibly be the 

 young of some larger shell, but at present I have not been 

 able to identify it. 



111. HEXAGONUS, pi. ix. f. 11 4, PMUppi, in Kuster, Conch. 

 Cab. p. 130, pi. xxii. f. 9. — Testa subobtuse conica, elata, 

 imperforata, albida, aureo-ferrngineo tincta ; anfractus con- 

 cavo-declives, rude plicato-corrugati, et malleati, medio 

 tuberculis obtusis subdistantibus uniseriatim cincti ; anfr. 

 ultimus inferne subacute angulatus ad angulum plicatus ; 

 basis planiuscula, dense irregulariter squamata. — A shell of 

 pyramidal form, chiefly distinguished by the row of tubercles 

 being placed in or near the middle of the whorls instead of at 

 the margin as in most species of the group. — Hab. Australia. 



112. siEius, pi. ix. f. 112, Gould, Wilkes' Exploring 

 Expedition, vol. xii. p. 173, Atlas, f. 203. — I have figured 

 this shell from a specimen in the British Museum, but the 

 species seems to me an unsatisfactory one, having so much the 

 appearance of a young shell. 



113. Pkevosti, pi. xii. f. 134, Soiverby, Thes. Conch. — 

 Testa sublate conica, imperforata, viridula, fusco-tincta et 

 fasciata; anfractus circ. 6, subconvexo-declives, liris minu- 

 tissimis granulorum cincti, superne nodoso-plicati ; anfr. 

 ultimus inferne subacute angulatus, ad angulum squamis 

 rugosis crassis subquadratis armatus ; basis imbricato-quadri- 

 lirata, in regione umbilicali albo callosa ; apertura sub- 

 obliqua ; columella arcuata, argentea. — A trochiform species, 

 in which the longitudinal ribs may be only faintly traced, 

 leaving nodules at the top of the whorls, and strong obtuse 

 square-looking scales at the margin, while the whorls are 

 encircled in the middle with two or three rows of minute 

 granules. The shell partakes of some of the characters of 

 T. imbricatus and T. hcematragus, but wanting the con- 

 tinuous longitudinal ribs of the former and the coloured 

 basal callosity of the latter, while it is distinguished from 

 both by its shorter growth and the character of its marginal 

 scales before mentioned. The specimen bore the name of T. 

 corolla in the collection of the late Dr.Prevost, but it is not the 

 corolla of Keeve, which I consider a variety of T. imbricatus. 



114. AUREUS, pi. xii. f. 141, 142, Jonas, Zeitschr. fiir 

 Malac. 1844, p. 168; Reeve, Conch. Icon. (Trochus), sp. 58, 



