VELUTINA. 239 



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

 chyliologie/ 1825. Brown called it Galericulum. There 

 are but few species known of this genus or of Lamellaria. 



v e lu*iUf{*V* (wwj-'fc'Vt) C* v ** w^*** ^tuarftft'O 

 N. s*!*- 1. VELUTINA PLICA'TILIS*, Miiller. U 



pUcat-iUs, Mull. Prod. Zool. Dan. p. 242. F. /&#, F. & H. iii. 

 p. 350, pi. xcix. f. 6, 7, and (animal) pi. OO. f. 6. 



BODY bright orange, sometimes speckled with yellow ; back 

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

 over the spire and hinder edges of the mouth 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 oifsets : 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 stria3 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 : epidermis tough, but easily 

 separated into slight fibrous plaits: spire obliquely twisted 

 upwards : whorls 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, placed 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, slightly reflected, and 

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

 B. 0-35. 



HABITAT : Among Tubularia indivisa and other zoo- 

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

 Northumberland and Durham (Alder and others), He- 

 brides and west of Scotland (Forbes and others), Aber- 

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

 * Flexible. 



