VITRINA §. 5. 6. 507 



; T. sigaretiformis, tenuis, subopaca, flavo-viridis, clepresso^';^^J^^y^'j,^| 

 orbicularis, tenuiter striata, subperforata ; spirae anfr. ad 3, con- /a'/,/^^ 

 vexiusculi, ulfimus amplus, declivis; apex subcentralis ; sutura 

 bene impressa; aperlura transversa, elliptica; labrum plerumque 

 membranaceura. — Diam. ^y^B^ alt. '/40 poll. (G.) , 



Vitrina marcida Gould f846. Exped. ahells p. 26. \ _ _ 



Habitat in insula Madera: Roche de Emperia, 4200' supra mare. j 

 0_b^r'«Differl a V. Lamarckii anfracluum numero majore et animale.» J 



■ ,45. V. Ruivensis Couthouy.^:///.//:^fU.'k;^2^^, . 



"^ T. haliotiformisj transverse subquadrata, depressa, papyran 

 cea, pellucida, nitida, chlorata, gradibus aetatis striata; spira 

 vix conspicua, anfractu 1 rapide crescente ; apex lateralis; aper-| {f^0.:y 

 tura faciem inferiorem adaequans; labrum prope spiram membra-' 

 naceum; columella laxe intro spiram volvens et eam penitus ex- 

 hibens. — Lat. ^'/40, alt. Tjo poll. (G.) 



Vitrina Ridvensis Couth. mss. Gould 1846. Exped. shells p. 26. 

 Habitat in insula Madera, prope cacumen montis Pico de Ruivo, 

 6210 ped. supra mare. 



46. V. nitida Gould. + * / "^ 



T. depresso-globosa, heliciformis, tenuissima, pellucida, niti- 

 dissima, laevigata, succineo-viridis, imperforata; spirae anfr. 4 

 convexi, ullimus amplus; apex subc^ntralis, prominens; sutura 

 excavata; apertura transversa, subcirculaf-is ; perist. inflexuni; 

 columella arcuata, usque ad apicem perspicua. — ' Diam. ''Ao, all. 



y4opoii. (G.) ~'"- . ■ 



Vitrina nitida Goidd 1846. Exped. shells p. 26. 

 Habitat in insula Madera: Roche de Empena, 4240' supra mare. 



47. V. Cuvieri (Helixarion) Ferussac. ' ''v 



T. heliciformis, subglobosa, depressa, argute striata, vires- 



cente fuscescens; anfr ?, ultimus amplissimus, rotundatus; 



apertura subrotundo-Iunata, latere interiore simplici?; columella 

 vix spirahs. — Long. SV^. lat. 4V4, axis V/i lin. (Fer.) 



Helixarion Cuvieri Fer. pr. p. 20. Hist. t. 9. f. 8. t. 9 A. f. I. 2. 



— — Blainv. in Dict. sc. nat. tom. 20. p. 482. 



Vilriiia Cuvieri Gray in Ann. of Phil. 1825. IX. p. 408, 



— — Soiv. gen. N. 11? 



— — Reeve Conch. syst. TI. t. 162. f. 2? 

 Austrulasiae Blainv .? 



