MARSHALL: AUDITIONS TO n'RITISH CONCHOLOGY. l8l 



been the lata form. And when he further says " that the other form 

 \tentaciilata'\ is the male is manifest from the description of M. 

 Bouchard and Dr. Johnston," the doubt in my mind is whether this 

 "other form" was the lata or tentaciilata one. And as he is wrong 

 in his reference (p. 235) to the figure in "British MoUusca" as 

 L. tetitaculata, which is certainly not that, his reference to the figure 

 of the animal would presumably be equally wrong, and that animal 

 more likely to belong to the var. lata. There is clearly some con- 

 fusion over these three forms, and unfortunately since I have given 

 attention to the point I have not captured any living specimens. 



Jeffreys' figures of the type and var. lata are perfect. Sowerby's 

 type figure is unlike ; it never has such a raised spire ; but the body- 

 whorl would well represent that of the var. tetitaculata — flatter, 

 narrower, and straighter at the outer edge. The figure of Lamellaria 

 latens Miill. in Sars' work^ also well represents our lata form, which 

 I take to be the same species ; the figures are identical ; and should 

 it prove to be not the male of J/, perspiciia, I should consider it a 

 separate species under Miiller's name. 



Gwyn Jeffreys thinks that AI. prodita l^ov. " inhabits the coast 0£ 

 Shetland," as he "dredged off Unst, in no fathoms, a Lamellaria 

 of an unusually large size, more than an inch long ; but it was 

 handled too roughly, and the shell broken to pieces."" 



Velutina plicatilis Miill. — Bogany Point, Bute, i2-i5f, one 

 specimen (A. Brown); Loch Fyne, 25f, one specimen (Foster and 

 MacAndrew) ; Brora, one specimen cast ashore in weed (Baillie) ! 

 Inverary, Loch Fyne, i5f. ; Lamlash, i8f. A species singularly 

 unattainable, but on one occasion Mr. Dawson obtained six speci- 

 mens of this rare mollusc from a tuft of seaweed drifted ashore at 

 Cruden, two of them being alive ; and ten fine specimens, all living, 

 were dredged off the Faroes in 1907 by the Scottish Fishery Board 

 (Simpson) ! 



V. laevigata Penn. — The spire in this species, though usually 

 twisted upwards, is occasionally sunk within the circumference of 

 the shell. Two remarkable specimens from the Outer Hebrides are 

 regularly oval, and have the outlines and spire of Marsenia perspiciia. 

 var. Candida Jeffr. — Sutherlandshire (Baillie) ! 

 var. tenuis Jeffr. — Shetlands, ySf. (Jeffreys); Sutherlandshire, 

 from haddocks (Baillie) ! Moray Firth ; Oban. This is much smaller 

 than the type, and the sculptured ridges are variable. Some of these 

 shells are as thin and membranous as V. plicatilis, and lose their 

 shape after the animal is extracted. 



1 Moll. Reg. Arct. Noiv., p. 150, pi. 12, f. 4 a-e. 



2 Brit. Conch., vol. v., p. 216. 



