HELIX §. 138. 425 



Helix planorbella (Iberus) Mouss. Rev. faune malac. Canar. 

 p. 76. t. 4. f. 18. 19. 



— — (Heniicyclus) Pcitel Catal. p. 93. 



p. Var. inciso-granulata {3Iouss. ibid, p. 176): « umbilico 

 paulo angustiori, plicis minus numerosis, sub lente minute 

 granulalim incisis, margine basali minus adnato, minus incras- 

 sato, intus distinctius convexo.» (Coll. Nr. 1284.) 

 Jlelix plunorbella Desh. in Fer. Hist. p. 45. 



— — Pfr. Novit. conch. H. p. 297. Nr. 408. t. 72. 



f. 8—12; Mon. Helic. V. p. 364. Nr. 2390. 



Ilabitat in insula Gomera (Fritsch), var. ^ Teneriffa. 



Obs. Forma a Cl. 31ousson supra descripta diagnosi Lamarckianae 

 quoad sculptiiram ct fascias melius respondere videtur, quani illa in Mon. 

 Hel. V. descripta, quare illa tamquam typica, altera non tamquani syno- 

 nymum //. Paivanae Mor. sed potius illius varietas consideranda videtur. 



2981. H. Faivana IWorelet. f 



«T. umbilicata, orbiculato-depressa^ oblique granulato- 

 striata, luteo- vel griseo-fulva, maculose 4-fasciata; anfr. 5 parum 

 convexi, sutura impressa juncti, ultimus superne carinatus, anlice 

 deflexus, basi turgidulus; apertura perobliqua, transverse ovalis, 

 intus fasciata; perisloma albidum, margine externo expansius- 

 culo, columellari appresse dilatato, umbilicum parvum, pervium 

 semi-legeute. — Diam. maj. 24, min. 19, alt. 11 mill. » (M.) 

 Helix Paivana Morelet in Journ, Conch. XII. 1864. p. 156. 



— — (Iberus) Mouss. Rev. faune malac. Canar. p. 77. 



(excluso synon.) 



Ilabitat in insula Gomera. 



Obs. Ab H. planorbella Lam., quacum (Mon, V. p. 364) cum dubio 

 junxeram , diversa videtur. 



2982. H. inutilis Mousson. 



« T. satis umbilicata, convcxo-orbiculata, oblique valido 

 costala, costulis acutis granulose incisis, interstitiis slriatis, pal- 

 lide fuscula, unicolor, ad basin albescens. Spira obtusc conica, 

 regularis; summo striatulo; sutura impressa, non marginata. 

 Anfr. 4^2, subconvexi, supra prope suturam vix lurgiduli; ul- 

 timus abrupte descendens, hinc transverse inQatus et fortiter 

 constrictus, angulo evanescente praeditus, subtus rotundatus. 

 Umbilicus apertus, ^/^ diametri aequans, ambitu rotundato. 

 Apcrtura perobliqua (60" cum axi), circulari-ovalis, alba. Perist. 

 acutum, late plane reflexum, intus sublabiatum; marginibus vix 

 disjunctis, lamina callosa lcnui interposita; supero arcuato ex- 



