156 



/3. spira elongata, crehrius fusco-marmorata, lineis spiralibus anfract. 



ultimi usque ad basin conspicuis. 

 Long. 35, diam. 15 mill. 

 Uab. Cotopaxi, reipubl. jEquatoris ; var. /B. in monte Cayembe. 



14. Descriptions of Eighteen New Species of Land-Shells, 



FROM the Collection of H. Cuming, Esa. 



By Dr. L. Pfeiffer. 



(Mollusca, PI. XIII.) 



1. Vitrina irradians, Pfr. V. testa depressa, ambitu subau- 

 riformi, tenui, lineis impressis confertim arcuato-radiata, lineis 

 irregularibus spiralibus obsolete decussata, diaphana, vix niti- 

 dula, superne cinnamomeo-cornea ; spira parvula, subpapillatim 

 elevata ; sutura impressa, marginata ; anfract. fere 4, plani- 

 usculis, rapide accrescentibus, ultimo depresso, basi convexiore ; 

 apertura perobliqua, lunato-subcirculari ; perist . simplice, tenui, 

 maryine columellari regulariter arcuato. 



Diam. 18^, alt. 8 mill. 

 Hab. in insula Ceylon. 



2. Vitrina Americana, Pfr. V. testa depresse semiglobosa, 

 tenuissima, Icevigatissima, nitidissima, virenti-hyalina ; spira 

 parvula, vix elata ; sutura subcrenulata ; anfract. 2\, convex- 

 iusculis, celeriter accrescentibus, ultimo subrotundato, subtus 

 latiusculo, anguste membranaceo-marginato ; apertura fere dia- 

 gonali, lunato-rotundata ; perist. simplice, regulariter arcuato, 

 margine supero antrorsum subdilatato. 



Diam. maj. 4, miu. 3, alt. 2 mill. 

 Hab. in Rebuspublicis Fosderatis Americse Borealis. 

 Forma persimHis V. annulatce, Stud., testa Isevigatissima, apertura 

 obliqua, etc. diversa. 



3. Helix Barrakporensis, Pfr. H. testa subperforata, ele- 

 vato-trochiformi, tenui, striatula, nitida,pellucida,fusco-cornea; 

 spira conica, acutiuscula ; sutura profunda ; anfract. 6, con- 

 vexis, lente accrescentibus, ultimo carinato, nan descendente, 

 basi convexiusculo ; apertura vix obliqua, depressa, subangulato- 

 lunari ; perist . simplice, tenui, recto, margine columellari brevi, 

 ad perforationem punctiformem reflexiusculo. 



Diam. 3\, alt. Z\ mill. 



Hab. ad Barrakpore, Indise (Bacon). 



4. Helix Muhlfeldtiana, Pfr. H. testa latissime umbilicata, 

 subdiscoidea , solida, rugoso-striata, lineis elevatis spiralibus 

 superne decussata, nigricanti-castanea ; spira vix elevata, apice 

 obtusissima ; anfract. 5, planiusculis, ultimo lato, depresso, 

 acute carinato, antice tumido, profunde deflexo, basi irregu- 

 lariter compresso ; apertura subhorizontali, transverse ovali, 

 intus ccendescenti-albn ; perist. simplice, marginibus conniven- 

 fibus, supero recto, incumbente, basali incrassato, subreflexo. 



Diam. maj. 47, min. 37, alt. 15 mill. 

 Hab. in Australia. 



