VELUTINA. 239 



that species, in his ^ Manuel de Malacologie et de Con- 

 chyliologie/ 1825. Bro^vn called it Galericul inn. There 

 are but few species known of this genus or of Lamellar la. 



1. Velutina plica'tilis"^, Miiller. 



BuHa pNcafilis, Milll. Prod. Zool. Dan. p. 242. V. flexiUs, F. & H. iii. 

 p. 3o0. pi. xcix. f. 6, 7, and (animal) pi. 00. f. 6. 



Body bright orange, sometimes speckled with yellow ; back 

 and tentacles of a paler hue : inantle tumid, partly reflected 

 over the spire and hinder edges of the month of the shell ; 

 branchial opening large, on each side of the head : snout broad : 

 tentacles cylindrical, rather long ; tips blunt : eyes small and 

 black, on swollen offsets ; foot lanceolate, broad, and rounded 

 in front with large ear-shaped corners, bluntly pointed behind : 

 gills pale-red, forming a single plume. 



Shell more oblong than oval, nearly membranous, semi- 

 transparent, having scarcely any lustre : sculpture, obscure 

 spiral strice and irregular lines of growth ; the apex is micro- 

 scopically and closely striated in a spiral direction : colour 

 yellowish, becoming yellowish-brown or coppery in aged spe- 

 cimens ; apex usually whitish : epklerims tough, but easily 

 separated into shght fibrous plaits : spire obliquely twisted 

 upwards : ivliorls 2|, ventricose in fresh, but compressed (from 

 collapse) in dried specimens; the last occupies almost the 

 whole of the shell : suture deep, and exposing a considerable 

 part of the penultimate whorl : mouth oval, jolaced below the 

 periphery, expanding outwards, and equalling in length 

 four-fifths of the shell ; base rounded : outer lip not much 

 curved, reflected when the shell is dried — often so much so as 

 to form a blunt and thickened edge : inner lip semicircular, 

 dark orange, of a uniform width, thick, shghtly reflected, and 

 forming with the outer Hp a complete peristome. L. 0-5. 

 B. 0-35. 



Habitat : Among Tuhularia indivisa and other zoo- 

 phytes, on stony or hard ground, in the coralline zone, 

 Northumberland and Durham (Alder and others), He- 

 brides and w^est of Scotland (Forbes and others), Aber- 

 deen (Macgillivray), Dunnet Bay, Caithness (Peach), 



* Flexible. 



