192 



V. Mamilla, Gray), such as V. papillosaj V. fiilminata and others, 

 might constitute a fourth division. The Mitriform species, such 

 as V. lyiiformis, Y, mitrifonnis and others, would naturally form a 

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

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

 V. dubia, Brod., wliich 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. VOLUTA MAEMORATA (pi. xlvi. f. 8.), SlVaitlS. 



Testa ovata, suboblonga, ventricosa, Isevi, fulvo-cameolata, ma- 

 cuHs Hneisque castaneis, irregularibus, angulato-flexuosis, fasciatim 

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

 quatuor primis Isevibus, ceeteris duobus ad tribus postice subangu- 

 laribus, seriem unicam spinarum obtusarum parvarum instructis ; 

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

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

 tice saturatiori ; labio externo subincrassato, subreiiexo ; pHcis colu- 

 mellse quatuor, vahdis, 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, ^^^th a conical apex ; volutions 3-4, 

 the first smooth, and the remaining two or tlu-ee shghtly angular 

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

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

 length of the shell, oblong, rather broad, fulvous witliin, wliich is 

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

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



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

 specimen. 



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



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

 cis subtrigonidis punctisque castaneis sparsim notata ; spira brevi, 

 subconica, apice papiUari ; anfractibus 5, quorum ultimis duobus 

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

 sime spinulosa ; anfractu ultimo elongato, antice subattenuato ; 

 apertura oblonga, columellfie pHcis quatuor validis. 



