202 HELICIDJE. 



range to its having been distributed with coffee plants, but this 

 theory has recently been called in question. Prof. Pilsbry thinks 

 that it has followed the cultivation of sugar-cane, and this appears 

 to be a rather plausible theory, seeing that in many places it is 

 commonly found on the borders of cane-fields. 



The bibliography of Eulota similaris is very voluminous and 

 I have confined myself to the essential portion of it with reference 

 to the geographical limits of this work. A number of varieties 

 have been established, but these have also been disregarded as 

 they likewise are outside the scope of the Fauna of British India. 

 Deshayes included under the synonymy of similaris, Helix cestus, 

 Benson, but in this I do not consider he was justified, since the 

 latter appears to me quite distinct, as already stated when dealing 

 with that species. 



174. Eulota extrusa, Tapparone. 



Helix similaris, var., Hanley & Theobald, Conch. Ind. 1870, pi. 53, 



fig. 2. 

 Helix (Dorcasia) extrusa, Tapparone Canefri, Ann. Mus. Civ. 



Genova, ser. 2, vii, 1889, p. 326. 

 Helta: (Eulota) extrusa, Pilsbry, Man. Conch, ser. 2, viii, 1893, 



p. 218, pi. 54, fig. 100. 

 Eulota (s. s.) extrusa, Pilsbry, op. cit. ix, 1895, p. 204. 



Original description : " H. testa anguste uinbilicata, sub- 

 globosa, corneo-alba, pellucida, per longitudinem oblique striata, 

 lineis tenuissimis appressis sub lente conspicuis, basi precipue 

 spiraliter exarata ; spira conoidea, parum elevata, apice obtusius- 

 culo. Anfractibus 5, regulariter accrescentes, convexiusculi, 

 sutura impressa, subirregulari sejuncti ; ultimus magnus, sub- 

 globosus, antice vix descendens, ad peripheriam interduin per- 

 obscure subangulatus. Apertura rotundato-lunata, parum obliqua ; 

 peristoma simplex, acutum, basi subreflexum, marginibus remotis ; 

 columellari dilatato, reflexo, umbilici mediam partem obtegente. 



"Dtain. maj. 15, min. 13; alt. 10 a 11 mill." (Tapparone.) 



Hob. Burma : Katha, Upper Irrawaddy (Fea). 



175. Eulota zoroaster, Theobald. 



Helix zoroaster, Theobald, J. A. S. B. xxviii, 1859, p. 306 ; Blanford, 



op. cit. xxxiv, 1865, p. 88 ; Hanley & Theobald, Conch. Ind. 



1874, pi. 86, figs. 2, 3 (var. concolor). 

 Helix (Dorcasia) zoroaster, Nevill in Anderson, Zool. Res. Two 



Exped. West. Yunnan, i, 1878, p. 881. 



Helix (Planispira) zoroaster, Nevill, Hand List, i, 1878, p. 79. 

 Helix (Helicella (Dorcasia)) zoroaster, Try on, Man. Conch, ser. 2, 



iii, 1887, p. 211, pi. 48, fig. 93. 

 Eulota (s. s.) zoroaster, Pilsbry, Man. Couch, ser. 2, ix, 1895, p. 205. 



Original description : " Testa umbilicata, depresso-globosa, 

 minute striata, cornea, ad peripheriam rufo unifasciata (interdum 



