238 PYRAMIDELLIDv^:. 



tluiu from any conviction of colour alone constituting (al- 

 though in some genera, where the possible diversities of 

 form and sculpture are limited, it perchance may) a suffi- 

 cient ground for specific distinction. 



We have never, however, seen any intermediate ex- 

 amples by which we could connect the painting of this 

 shell with tliat of sicbulatUi to which in other respects it 

 most closely approximates. The distinctions are thus indi- 

 cated by Mr. Alder. " Two species appear to be included 

 under the name of E. suhulata. The smaller and much 

 more common species, has only two bands placed close 

 together in the centre of the body-whorl, with occasionally 

 a faint indication of another on the upper or lower margin. 

 The shell is thinner and more transparent than in the 

 larger species, the whorls less oblique, the lower one a little 

 more ventricose, the aperture not so much contracted, and 

 the columellar margin not quite so straight." To this we 

 may add that in our own examples the bands are adjacent 

 and linear, and run along the lower half of each of the 

 upper turns, and round the middle of the body-whorl ; the 

 ground tint is white, and the base of the pillar, as well as 

 the revolving lines, are of a reddish yellow. We counted 

 nine whorls only in our largest specimen, which only 

 measured the third of an inch. Whether these last cha- 

 racters are permanent is more than we dare affirm, since 

 we have not seen very many individuals. As we refer 

 the lineata of Sowerby to the preceding shell, we have 

 used the epithet suggested as more appropriate by Mr. 

 Alder. 



" The animal is white, with two long subulatcd ten- 

 tacles, approximating at the base, with the eyes immedi- 

 ately behind them. The foot extends a good deal before 

 the head, and has a bilobed flap on the upper surface in 



