48 THE NAUTILUS. 



vi INDEX TO CONCHOLOGISTS' EXCHANGE. 



Pleurocera alveare ; P. undulaturu ; P. moniliferum ; 



P. canaliculatuiu ; P. troostii ; P. lewisii ; P. ele- 



vatum ; P. neglecturn ...... 11,94 



Pleuroxia Ancey, new name for Angasella, which is 



preoccupied in marine shells ; type Helix cyrto- 



pleura Pfr. ; Australia, . ... II, 38 



Pcecilostola Ancey, n. subg., type Helix Farrisi Pfr., 



Andes of Peru, . . ' . . . . I, 20, 26, 54 

 Polygyrella polygrella Bid. & Cooper, var. moutanensis 



Aucey (n. var.), ...... II, 80 



Pomatiopsis lapidaria Say ....... II, 91 



Pristina Ancey, n. subg., types Hyalina Stearnsi Bid. ; 



H. Lansing! Bid. ; North America, ... I, 20, 2<> 

 Pristiloraa Ancey, n. subg., in place of Pristina Ancey, 



and Anceyia Pilsbry, uon Anceya Bourguignat, . I, 54 



Pseudiberus Ancey, 11. subg., types Helix tectuui-sinense 



Mart. ; H. zenonis Gredler ; H. plectotropis 



Mart. ; and H. mataiensis Nevill ; China, . I, 76 



Pupa corpulenta Morse, var. parietalis Ancey, var. nov. ; 



Utah, . . 11,80 



Rhysotina Ancey, u. subg., type Helix Welwitschi Mor., 



and H. hepatizon Gld. ; Island of Sao-Tome, . I, 53 



Rhyssotopsis Ancey, n. subg., type Helix Haughtoni 



Benson ; Andaman Isls., ..... I, 64 



Saxicava rugosa Linn., ...... II, 42 



Segmentina Wheatleyi Lea, ..... I, 20 



Segmentina armigera Say, ... . , II, 2 



Sheldonia Ancey, n. subg., types Helix Trotteriana 



Bens.; II. phytostylus Bens. ; H. natalensis Pfr. 



and perhaps cotyledonis Benson ; S. Africa, . I, 53 



Silii|iia costata Say, and Solecurtus gil)bus Spleng., . II, 35 



Somatogyrus subglobosus Say and S. depressus Tryon, . II, 90 



Sphrerium sulcatum Lam. ; S. solidulum Pr. ; S. striati- 



iiuiu Lam. ; S. Jayanum Pr., . . . . II, 48 



Spluerium truncatum Liusley ; S. occidentals Pr. ; S. 



transversum Say, ...... II, 49 



Sphincterochila Ancey, u. subg., types H. filia, Mouss. ; 



H. Boissieri Charp. ; near the Dead Sea and N. 



Arabia, . II, 23 



( To In' 'i'>i' .',//,/ /;; S,'ft,'int>,'i- number. ) 



