lit) 



TURBINID.S. 



grooved and mammillated, internally homy and paucupinL In T. 

 Mrmortctu the exterior of the opereulum is botryoidal, like some of the 

 tufaceous deposits of petrifying wells. Animal with pectinated beat 



There an 60 recent ipedea which are found principally in tropical 

 MML The foeail specie* amount to 390, found in the Lower Silurian 



T. marmorattu has the shell subovate, Tory ventricose, imperforate, 

 smooth, green marbled with white and brown or subfasciated ; the 

 la*t whorl transversely nodulous in a triple series, the upper oodule 

 greatest ; the lip at the base flattened into a short subreflected tail I 

 proeeas; mouth silvery. 



This shell when deprived of ita external layer exhibits a silvery, 

 iridescent, and very brilliant nacre. . . 



T. torqwttu has the shell orbiculate-convex, broadly and deeply 

 umbUicated, trangverwly sulcated, substriateil with close-set longitu 

 dinal lamella; of a gray-green colour; whorls above, coronated ; the 

 last girt with a median carina; pire blunt at the apex. (Lam.) 



The shell, when deprived of ita first layer, is beautifully nacreous. 



This species, which grows to a large size, inhabits King George s 

 Sound. Only a few individuals were found alive. 



Turbt ttrfunlvi, 



a. Shell lth the animal, Men from below; 6, t'.ie inlmal oat of the ahell' 

 c, ooWdc of the operation ; rf, InMde. (' Aitrolibe.') 



T. Cool-ii has the shell orblctilate-coiivcx, with a ventrioose dilated 

 baae, longitudinally plicate, rough, rufo-fuscescent ; the plications very 

 frequent, close-set, oblique, Imbricato-tquamoua ; the whorls convex ; 

 lower surface rather convex, concentrically rugoux, and imperforato. 

 (Lam.) 



The animal has long filiform white tentacles, dotted with red- 

 brown, without palmettos at their internal part; the eyes pediculated. 

 The mouth i elongated in form of a proboscis, or in widened into a 

 hood. It is white, striated transversely with black. The foot is 

 large, yellowish, dottrd with brown below, with a median line of the 

 same colour. 



The opereulum U oval, rounded at one of ita extremities with an 

 oblong fotset, sometimes paucispiral. It is white and greenish. Its 

 Miiral U lets pronounced than in the greater portion of the other 

 Turbines. 



Messrs. Quoy and Oaimard found this species in great numbers in 

 Tasman's Bay, New Zealand, in the Bight of the Astrolabe (L'Anse-de- 

 1' Astrolabe), and on the reefs of the Passe-dea-Franfais. 



Turbo 



a, Shell; 6, ihcll rcn from below, nnimul ncaily In profile; r, anterior part 

 of animal Ken from below ; rf, Inside of opereulum ; r, ouWHc. (' Ailrolabe.') 



Phatianella. Shell elongated, polished, richly coloured ; whorls 

 convex ; aperture oval, not pearly ; inner lip callous, outer thin ; 

 opereulum shelly, callous outside, subspiral inside. 



Animal with long ciliated tentacles ; head-lobes pectinated, wanting 

 in the minute species ; neck-lobes fringed ; sides ornamented with 3 

 cirrbi; branchial plume long, partly free; foot rounded in front, 

 pointed behind, its sides moved alternately in walking; lingual teeth 

 even-edged ; laterals 6, hooked, denticulated ; uncini about 70, 

 gradually diminishing outwards, hooked, and denticulated. 



The I'haiiancllif are always smooth. This polish, and still more 

 their continual movement*, prevent them from being covered with 

 Serpultr, l-'luttnr, and other paronites which encrust sluggish shells. 

 This agitation makes it difficult for them to preserve the contour of 

 their aperture perfect, for it is very fraiL 



These are lively active animals, and voracious withal, for they were 

 taken in nets baited with flesh let down into the sea. Their foot, 

 endowed with great mobility, is elongated like a proboscis ; its great 

 peculiarity is its faculty of moving in two portions as it were, that w 



