192 



V. Mamilla, Gray), such as V. papulosa, V. fulminata and others, 

 might constitute a fourth division. The Mitriform species, such 

 as Y. lyriformis, V. mitriformis and others, would naturally form a 

 fifth division. Several species would still remain, which could not 

 he arranged with any of the above, these are V. bullata, Swains., 

 V. dubia, Brad., which are anomalous and probably osculent forms. 



The Volutes are marine and appear to belong to the more tem- 

 perate and warmer zones. Many fossil species are known, princi- 

 pally belonging to the tertiary beds. 



DESCRIPTION. 



1. Voiajta maumorata (pi. xlvi. f. 8.), Swains. 



Testa ovata, suboblonga, ventricosa, lsevi, fulvo-carneolata, ma- 

 culis lineisque castaneis, irregularibus, angulato-flexuosis, fasciatim 

 dispositis, picta; spira brevi, apice conico, anfractibus tribus ad 

 quatuor primis lajvibus, cseteris duobus ad tribus postice subangu- 

 laribus, seriem unicam spinarum obtusarum parvarum instructis ; 

 anfractu ultimo maximo, antice attenuate, apertura maxima |- lon- 

 gitudinis testae ajquante, oblongo, latiusculo, intus fulvescente, an- 

 tice saturation ; labio extemo subincrassato, subreflexo ; plicis colu- 

 meUa? quatuor, validis, fulvis. 



Shell ovate, sub-oblong, ventricose, smooth, of a yellowish flesh 

 colour, with irregular spots, and angularly flexuous chesnut lines, 

 arranged in bands ; spire short, with a conical apex ; volutions 3-4, 

 the first smooth, and the remaining two or three slightly angular 

 posteriorly, with a single row of obtuse small spines, the last volu- 

 tion very large, attenuated anteriorly ; aperture very large, | of the 

 length of the shell, oblong, rather broad, fulvous within, which is 

 darker at the anterior end ; outer lip somewhat tliickened and re- 

 flected ; folds of the columella four, distinct, fulvous. 



Tins is an Australian form, we have represented Miss Saul's 

 specimen. 



2. Voltjta Cymbiola (pi. li. f. 75, 76.), Chemn. 



Testa oblonga, crassiuscula, glabra, pallida, maculis pallide fus- 

 cis subtrigonulis punctisque castaneis sparsim notata ; spira brevi, 

 subconica, apice papillari ; anfractibus 5, quorum ultimis duobus 

 ad tribus postice spiniferis ; spinis parvis, acutis ; sutura subtilis- 

 sime spimdosa ; anfractu ultimo elongato, antice subattenuato ; 

 apertura oblonga, columellse phcis quatuor validis. 



