TURBO. 217 



valde convexum, cseruleo-tinctum. — A shell of regularly 

 conical form, with large arched scales at the margin, and a 

 rose or bluish green callosity adjoining the columella. — Hab. 

 Port Essington, Australia. 



95. ROTULARis, pi. ix. f. 129, Lamarck — Trochus rotularis, 

 Reeve, Conch. Icon. sp. 48. — Testa late conoidea, crassa, 

 imperforata, spadicea, aut calcareo-alba, virescente pallide 

 tincta ; anfractus concavo-declives, subcorrugati, ad mar- 

 ginem squamis numerosis radiatim compressis peculiariter 

 quadrato truncatis ornati ; basis convexa, circulariter dense 

 imbricato-lirata ; apertura oblique ovata ; columella crassa. 

 — A very remarkable and easily recognised species, chiefly 

 characterised by the peculiar squarely truncated character of 

 the marginal scales. — Hab. Australia. 



96. FiMBRiATUS, pi. X. f. 123, Lamarck (Trochus) — Trochus 

 fimbriatus, Reeve, Conch. Icon. sp. 49 — pileolum, Reeve — 

 confrago.sus, Gould. — Testa subdepresse conoidea, imper- 

 forata, calcareo-alba ; anfractus piano- vel concavo-declives, 

 obscure corrugato striati, ad marginem expanse fimbriati ; 

 basis leviter convexa, circulariter imbricato lirata. Operculum 

 ovale, extus album, valde convexum. — A depressly conical 

 white shell with a broadly frilled margin. — Hab. Australia. 



97. SQUAMIFERUS, pi. x. f. 124, Koch, in Philippi, Abbild. 

 und Beschr. Conch, pi. iv. f. 9— Trochus fimbriatus var., 

 Philippi. — Testa late conoidea, imperforata, flavescente- 

 alba ; anfractus superne convexi, inferne concaviusculi, 

 ubique obsciure plicato-corrugati, spiraliter liris creberrimis 

 submuricatis sculpti, ad marginem planato fimbriati; basis 

 Isevissime convexa, circulariter squamato-lirata callo cen- 

 trali subexcavato. Operculum ovale, extus album, valde con- 

 vexum. — Allied to T. fimbriatus, but distinct. The whorls 

 are more tumid, more regularly and closely sculptured, the 

 marginal frill is flatter and not so broadly expanded, and 

 the central callosity of the base is depressed almost into an 

 umbilicus. — Hab. Australia. 



98. SPINULOSDS, pi. xii. f. 136, Xamarc/c (Trochus), vol. ix. 

 p. 127 — Trochus spinulosus. Reeve, Conch. Icon. sp. 5o. — 

 Testa late conoidea, lutescente spadicea, imperforata ; an- 

 fractus convexo-declives, oblique rude granoso-corrugati, ad 

 marginem muricato squamati ; anfr. ultimus ad marginem 



