1862.] DR. L. PFEIFIER ON A NEW HELIX, 117 



aucta ; perist. duplex, internum porrectum, basi fissum, ex- 

 ternum patens et reflexum, parte canalem formante recurvata. 



Long. 23, diam. 10 mill. 



Hab. In sylva "x\nnamallay," ad radicem montium Nilgiricorum. 



7. Callia wallacei, Pfr. (PI. XII. fig. 1). T. irregulariter 

 pupoeformis, solidula, Icevigatissima, callo nitido obducta, fulvo- 

 earnea vel albida ; spira irregularis, apice brevissime conoidea ; 

 sutura indistinct a ; anfr. sub 4|, summi vix conspicui, 2 ultimi 

 antrorsum deviantes ; apertura subcircularis, Integra; perist. 

 rectum, leviter incrassatum, ad parietem aperturalem adnatum, 

 parte columellari subinflata. 



Long. 5, lat. 3 mill. Ap. diam. ^ mill. 

 Hab. In insula Ceram {Mr. Wallace). 



8. Hydrocena (Omphalotropis) ceramensis, Pfr. T. sub- 

 perforata, ovato-conica, tenuiuscula, laevigata, nitida, unicolor 

 fulvida vel cingulo albido ornata ; spira conica, acuta ; sutura 

 marginata ; anfr. 7, vix convexiusculi, ultimus peripheria leviter 



filocarinatus, crista basali forti munitus ; apertura parum ob- 

 liqua, angulato-ovalis ; perist. simplex, expansiusculum, mar- 

 ginibus distantibus, interdum callo tenuissimo junctis, sinistra 

 flexuoso, medio subdilatato. 



Long. 8, diam. 4 mill. 



Hab. In insula Ceram (Mr. Wallace). 



5. Description of a New Species of Helix (Nanina). 

 By Dr. L. Pfeiffer. 



(Plate XII.) 



Helix titanica, Pfr. (PI. XII. fig. 3). T. angustissime umbi- 

 licata, condideo-depressa, solidula, lineis impressis spiralibus 

 et irregularibus obliquis sculpta, sub epidermide pallide viridi- 

 lutescente albida; spira conoideo- convex a, vertice minuto, ob- 

 tuso ; anfr. 5^, vix convexiusculi, priores subcarnei, ultimus non 

 descendens, ad sutxiram erenulatus, medio obtuse carinatus et 

 fascia latiuscula spadicea deorsum diluta notatus, subtus in- 

 Jlatus ; apertura obliqua, ovali-lunaris ; perist. rectum, mar- 

 ginibus distantibus, colmnellari vix incrassato, ad insertionem 

 in laminam brevem triangularem revoluto. 



Diam. maj. 68, min. 57, alt. 38 mill. 



Hab. Anamallay Forest, at the foot of the Neilgherries {Mus. 

 Cuming) . 



EXPLANATION OF PLATE XII. 



Fig. 1. CMllia wallacei, p. 117. Fig. 7. Rhiostoma simplicilabre, p. 115. 



2. Cataulus recurvatus, p. 116. 8. Rhiostoma hainesi, p. 115. 



3. Helix titanica, p. 117. 9. Rhiostoma housei, Haines, Ann. 



4. Ci/clotus trailli, ip. 116. Lye. N. Y. vi. p. 157 (for 



5. Leptopoma portei, p. 116. comparison with R. hainesi). 



6. Cyclophorus saturnus, p. 116. 



