370 ACHATINID^. 



335. Zootecus pertica, Benson. 



Bulimus pertica, Benson, A. M. N. H. ser. 2, xix, 1857, p. 328 ; 



Pleiffer, Mon. Ilelic. Viv. iv, 1859, p. 462 ; Hanley & Theobald, 



Conch. Ind. 1870, pi. 22, fig. 7. 

 Pupa {Cylindrus) pertica, von Martens, Die Heliceen, ed. 2, 1860, 



p. 297. 

 Bulimina (Mastns) jjertica, Pfeiffer & Clessin, Nomencl. Helic. Viv. 



1881, p. 293. 

 Bulimimis (Zootecus) pertica, Kobelt, Conch.-Cal)., Fani. Buli- 



minidae, 1900, p. 082, pi. 103, fig-. 9. 

 Zootecus insularis, var. pertica, Pilsbiy, Man. Conch, ser. 2, xviii, 



1906, p. 113, pi. 26, fig. 23. 



Original description : — " Testa impei-forata, exacte cylindrica, 

 elongatissinia, confertissime arcuato-striolata, sulcis nonuullis in- 

 conspicuis spiraliter sculpta, alba ; spira cylindrica, apice conico, 

 obtusiuseulo : sutura impressa ; anfractibus 10 subplaiiulatis, 

 ultimo i testae sequante, antice leviter descendente, basi rotimdata ; 

 apertura valde obliqua, pyriformi ; peristoinate teiiiii, margiiie 

 basali incrassato, subeffuso, columellari expanse, appresso. 



" Long. 20, diam. 5 mill." (Benson.) 



Hah. India (Baker); Sind (Hanley Sf TlieohaJd). 



At once distinguisbable from Z. 'pidlus and its allies by its 

 lengthened cylindrical form, its slenderness, and by the obliquity 

 of \he aperture. It may be considered as tlie extreme form of the 

 series. According to Nevill it is based on an abnormal specimen 

 of Z, polygyratus. 



336. Zootecus polygyratus, Reeve. 



Bulimus poJyyyratus, Reeve, Conch. Icon, v, 1849, Bulimus, pi. 79, 



fig. 578 ; Pfeiffer, Mon. Helic. Yiv. iii, 1853, p. 404 ; Issel, Mem. 



Real. Accad. Sci. Torino, ser. 2, xxiii, 1866, p. 416. 

 Chondrus (Mastus) poJyyyratus, Adams, Gen. Rec. Moll, ii, 1855, 



p. 165. 

 Bulimus {Cylindrus) polyyyratns, Pfeiffer, Malak. Blatt. ii, 1856, 



p. 155. 

 Mastus poJyyyratus, Chenu, Man. Conchyl. i, I860, p. 442, fig. 3246. 

 Pupa (Cylindrus) insularis, var. jwlyyyrata, Nevill, Hand List, i, 



1878, p. 195. 

 Bidimina (Mastus) polygyrata, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 293. 

 Rumina polyyyrata, Ancev, Bull. Soc. Malac. France, iii, 1886, 



p. 63. 

 Zootecus polipniratus, Kobelt, Conch.-Cab.,Fam. Buliminidae, 1902, 



p. 947, ph 132, figs. 20, 27. 

 Zootecus insular t(.s, var. polycjratus, Pilsbrv, Man. Conch, ser. 2, xviii, 



1906, p. 113, pi. 26, fig. 31. 



Original description : — " Shell pyramidally turreted, minutely um- 

 bilicated, whorls nine to ten in number, rather narrow, rounded, 

 finely plicatelv striated, columella reflected, aperture small, lip 

 simple; bluisli-white." (Reeve.) 



