149 



depresso-rotundato, noti descendente ; umbilico lato, aperto ; 

 apertura vix obliqua, limato-ovali ; perist. simplice, recto, mar- 

 ginibus subconniventibus. 

 Diam. maj. 7, min. 5|, alt. 3 mill. 



10. Helix BicoNCAVA, Pfr. H. testa umbilicata, depressa, co7i- 

 fertim arcuato-costata, opaca, corneo-lutescente, rufostrigata ; 

 spira concava; anfract. 4|^-5, angustis, pemdtimo convexo, ul- 

 timo rotundato, non descendente ; umbilico lato, perspectivo ; 

 apertura subverticali, altiore quam lata, lunuri ; perist. sim- 

 plice, recto, margine dextro antrorsum subarcuato. 



Diam. maj. 5, min. 4^, alt. 2 mill. 



11. Pupa NovosEELANDiCA, Pfr. P . testa perforata, subcylin- 

 drica, tenui, oblique confertim costata, saturate fusca, maculis 

 stramineis prcecipue ad suturam impressam variegata ; spira 

 sursian vix attenuata, apice subrotundata ; avfract. 7\, con- 

 vexiuscuHs, ultimo g- longitudinis non attingente, rotundato; 

 apertura subverticali, semicirc\dari, edentula ; perist. simplice, 

 recto, marginibus remotis ; columellari superne vix dilatato. 



Long. 4|, diam. 2. mill. ; apert. li mill, longa. 



12. ToRNATELLiNA NovosEELANDiCA, Pfr. T. testa ohlongo- 

 turrita, tenui, laevigata, nitida, fulvo-cornea ; spira turrita, 

 acutiuscula ; anfract. 5, convexiuscidis, ultimo i longitudinis 

 subcBquante, basi rotundato ; plica parietali profunda, me- 

 diocri ; columella albo-callosa, alte torto-subtruncata ; aper- 

 tura vix obliqua, subauriformi ; perist. tenui, acuto. 



Long. 3i, lat. 1|^ mill.; apert. li mill, longa. 



This seems to be the species mentioned by Mr. Gray (Proc. Zool. 

 Soc. 1849, p. 167), mider the name oi Elasmatina Reclusiana, Petit, 

 from the island Opara ; but its characters are very different from 

 those ascribed by M. Petit to his species. 



12. Descriptions of Eight Species of Land Shells, 



from the island mauritius. 



By Dr. L. Pfeiffer. 



1. Helix mucronata, Pfr. H. testa imperforata, turbinato- 

 depressa, tenuissima, membranacea, oblique rugosida, lineis 

 spiralibus confertissimis sub lente sculpta, pellucida, virenti- 

 cornea; spira parva, conoidea, mucronata; sutura itnpressa ; 

 anfract. 4, ra]nde accrescentibus, pluniusculis, ultimo non de- 

 scendente, acute carinato, basi convexiusculo ; apertura per- 

 obliqua, subrhombea ; perist. simplice, acuto, recto, margine 

 columellari usque ad carinam regulariter arcuato. 



Diam. maj. 17, min. 14, alt. 9 mill. 



2. Helix Mauritiana, Pfr. H. testa subperforata, conoideo- 

 semiglobosa, solida, superne scabre arcuuto-rugosa, opaca, uni- 

 colore saturate brunnea ; spira convexo-conoidea, apice obtii- 



