294 prpiLLiDjE. 



Prof. Pilsbry in proposing the subgenus Bensonella in 1900, 

 with Piqm plicidens as type, seems to have ignored the fact that 

 Aucey had already included the species in the section Boysidia, 

 established for the reception of l^iqM dorsata, for he makes no 

 allusion to it, although on the next page he reduces Boysidia to a 

 subgenus under Hypselostoma, a procedure in which 1 am unable 

 to follow him, for I believe a greater affinity exists between 

 plicidens and hunana tlian between the latter and the genus 

 Hypselostoma. 



Besides the two species referred to, some other Chinese forms 

 belong here, i.e. Pupa hunana, Gredler*, P. stropliostoma, Mollen- 

 dorfft, P. anr/tdina, Gredler ±. 



264. Boysidia plicidens, Benson. 



Pupa jjlicidens, BenKOu, A. M. N. H. ser. 2, iv, 1849, p. 126 ; Kiister, 



Conch.-Cab., Pupa, J 852, p. 136, pi. 17, figs. 23, 24; Pfeiffer, 



Men. Ilelic. Viv. iii, 1853, p. 553 ; Hanley & Theobald, Conch. 



lud. 1874, pi. 100, fig. 8 ; ISowerby, Conch. Icou. xx, 1876, Pupa, 



pi. 16, fig. 151. 

 Vertiyo ( Odontoct/ckis) plicidens, Adams, Gen. Eec. Moll, ii, 1855, 



p. 173. 

 Pu})a (Scopelophila) j^Uddois, von ^lartens, Die Ileliceen, ed. 2, 



1860, p. 296. 

 Pupa (Scarabella) plicidens, Pfeiffer, Malak. Blatt. ii, 1876, p. 175. 

 Pupn {Odontocyclas) jdiddens, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 350. 

 Pupa (Boysidia) plicidens, Aucey, Le Naturaliste, No. 47, 1881, 



p. 373. 

 Btfidaria {Bensonella) plicidens, Pilsbrv. Proc. Acad. Nat. Sci. 



Philadelphia, 1900, p. .591. 

 Ju\. ? =IIi/drocena ynilium (P>ensun), Godwin-Austen, P. Z.S. 1872, 



p. 515, pi. 30, fig. 3. 



Origincd descnpfwn : — " T. umbilicata, ovato-conica, subtrochi- 

 formi, glabriuscula, obscure striata, cornea ; anfractibus quinque 

 convexis, ultimo ventricoso, antice ascendente, ad basin tumido ; 

 sutura impressa : apice obtuso ; apertura irregulavi subtriangulari, 

 9-plicata ; peristomate continuo, sinuato, expanse, marginibus 

 callo appi'esso expanso junctis : dextro medio extus impresso. 

 intus tuberculato-incrassato ; plicis parietalibus 3, quarum 2 

 .superioribus elongatis, columellari dentiformi, unica, palatalibus 

 5, quarum 2 sub-basalibus, minutis ; margine basali extus callo 

 prsedito ; umbilico angusto. 



"Long. 2, lat. 1;^ mill." (Benson.) 



Hah. India : Landour {Hutton) : Mussoorie ; Cberra Poonjee, 

 Assam {Godwin- Avsten). 



* Gredler, Jahrb. Deuts. Malak. Ges. viii. 1881, d. 23, pi. 1, fig. 5; Heude, 

 Moll. Terr. Vail. Fl. Bleu, 1882, p. 76, pi. 18, lig. 2'5. 



t Jahrb. Deuts. Malak. Ges. xii, 1885, p. 395, pi. 11, fig. 23. 

 + Concliyl. Fauna von China, viii, 1885, p. 7. 



