HELIX S. 438. 495 
Helic planorbella (W:berus) Mouss. Rev. faune malac. Canar. 
p-026. 69306018:.419; 
— — (Hemicyclus) Pálel Catal. p. 93. 
8. Var. inciso-granulata (Mouss. ibid. p. 176): «umbilico 
paulo angustiori, plicis minus numerosis, sub lente minute 
granulatim incisis, margine basali minus adnato, minus incras- 
sato, intus distinctius convexo.» (Coll. Nr. 1284.) 
Helix planorbella Desh. im Fér. Hist. p. 43. 
-— — Pfr. Novit. conch. IL. p. 297. Nr. 408. t. 72. 
f. 8—12; Mon. Helic. V. p. 364. Nr. 2390. 
Habitat in insula Gomera (Fritsch), var. D Teneriffa. 
Obs. Forma a Cl. Mousson supra descripta diagnosi Lamarckianae 
quoad sculpturam et fascias melius respondere videtur, quam illa in Mon. 
Hel. V. descripta, quare illa tamquam typica, altera non tamquam syno- 
nymum 4. Paivanae Mor. sed potius illius varietas consideranda videtur. 
2981. EI. Paivana BMÉorelet. T 
«T. umbilicata, orbieulato-depressa, oblique granulato- 
striata, luteo- vel griseo-fulva, maculose 4-fasciata; anfr. 5 parum 
convexi, sutura impressa juncti, ultimus superne carinatus, antice 
deflexus, basi turgidulus; apertura perobliqua, transverse ovalis, 
intus fasciata; peristoma albidum, margine externo expansius- 
culo, columellari appresse dilatato, umbilicum parvum, pervium 
semi-tegente. — Diam. maj. 24, min. 19, alt. 11 mill.» (M.) 
Helix Paivana Morelet in Journ. Conch. XII. 4864. p. 156. 
— — (Iberus) Mouss. Rev. faune malac. Canar. p. 77. 
(excluso synon.) 
Hlabitat in insula Gomera. 
Obs. Ab H. planorbella Lam., quacum (Mon. V. p. 364) cum dubio 
junxerami, diversa videtur. 
2982. EI. inutilis Wiousson. 
«T. satis umbilicata, convexo-orbiculata, oblique valide 
costata, costulis acutis granulose incisis, interstitiis striatis, pal- 
lide fuscula, unicolor, ad basin albescens. Spira obtuse conica, 
regularis; summo striatulo; sutura impressa, non marginata. 
Anfr. 4!/j, subconvexi, supra prope suturam vix turgiduli; ul- 
ümus abrupte descendens, hinc transverse inflatus et fortiter 
constrictus, angulo evanescente praeditus, subtus rotundatus. 
Umbilieus apertus, !'4 diametri aequans, ambitu rotundato. 
Apertura perobliqua (609 cum axi), circulari-ovalis, alba. Perist. 
acutum, late plane reflexum, intus sublabiatum; marginibus vix 
disjunetis, lamina callosa tenui interposita; supero arcuato ex- 
