370 ACHATINIDJE. 



335. Zootecus pertica, Benson. 



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



Pfeiffer, MOD. Helic. 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 (Mastus) pertica, Pfeiffer & Clessin, Nomencl. Helic. Viv. 



1881, p. 293. 

 Bulimivius (Zootecus) pertica, Kobelt, Conch.-Cab., Fam. Buli- 



minidae, 1900, p. 682, pi. 103, fig. 9. 

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



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



Original description : " Testa imperforata, exacte cylindrica, 

 elongatissirua, confertissime arcuato-striolata, sulcis nonnullis in- 

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

 obtusiusculo ; sutura impressa ; anfractibus 10 subplanulatis, 

 ultimo -I- testae sequaote, antice leviter descendente, basi rotundata ; 

 apertura valde obliqua, pyriformi ; peristomate tenui, margin e 

 basali incrassato, subeffuso, columellari expanse, appresso. 



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



Hab. India (Baker}-, Sind (Hanley $ Theobald). 



At once distinguishable from Z. pullus and its allies by its 

 lengthened cylindrical form, its slenderness, and by the obliquity 

 of the aperture. It may be considered as the extreme form of the 

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

 of Z t polygyratus. 



336. Zootecus polygyratus, Eeeve. 



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



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



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

 Chondrus (Mastus} polygyratus, Adams, Gen. Rec. Moll, ii, 1855, 



p. 165. 

 Bulimus (Cylindrus) polygyratus, Pfeiffer, Malak. Blatt. ii, 1856, 



p. 155. 



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

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



1878, p. 195. 

 Bulimina (Mastus} polygyrata, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 293. 

 Rumina polygyrata, Ancey, Bull. Soc. Malac. France, iii, 1886, 



p. 63. 

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



p. 947, pi. 132, figs. 26, 27. 

 Zootecus insularus, var. polygratus, Pilsbry, 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 plicately striated, columella reflected, aperture small, lip 

 simple; bluish-white." (Eeeve.) 



