150 VITRINA. 



V. RETICULATA, Mousson. PL 32, figs. 95-97. 



Depressed, thin, subdiaphanous, thinly but distinctly striate, 

 elegantly reticulated by slight decurrent lines, greenish or light 

 purplish corneous; spire minute, suture not margined; whorls 

 2-5-, rapidly increasing, subdepressed , more convex below; aper- 

 ture oblique, widely oval, margins approximating. 



Diam. 8, alt. 3 - 5 mill. 



Teneriffe. 



V. MARCIDA, Gould. PL 32, figs. 98-100. 



Depressed sigaretiform, shining, fragile, brownish green ; 

 apex subcentral, suture impressed ; whorls 3, the last subplanate; 

 aperture Innately auriform. Diam. 5-7, alt. 2-3 mill. 



Madeiran Group. 



V. media, Lowe, is a synon} T m. Wollaston doubts its dis- 

 tinctness from the next species ; he finds it usually smaller, 

 however, of paler color, more depressed spire and less inflated 

 body-whorl, the lower lip more broadly membranaceous. It 

 has usually half a volution less than V. nitida, with slight 

 indications of short radiating plicae at the suture and towards 

 the aperture. 



V. NITIDA, Gould. PL 32, figs. 1, 2. 



Depressed, very thin, irregularly very slightly striulate, pel- 

 lucid, very shining, greenish yellow ; spire scarcely elevated, 

 suture distinct, subimpressed ; whorls 3^, rapidly increasing, 

 the last rather wide below ; aperture widely oval, oblique, colu- 

 mellar margin submembranaceous. Diam. 15, alt. 7 mill. 



Madeira. 



It is V. Lamarckii, of Lowe, in part. See remarks under 

 preceding species. 



Y. ANGULOSA, Morelet. PL 32, figs. 3-5. 



Conoidly depressed above, more rounded below, very thin, 

 diaphanous, reddish green ; spire obtuse, suture distinctly mar- 

 gined ; whorls 3, rapidly increasing, th3 last angulate ; aperture 

 ovately subangular, oblique, the lower margin membranaceous. 



Diam. 6, alt. 3 mill. 



Sta. Maria, Azores. 



