386 FERUSSACIDjE. 



immature form of the former, being considerably broader at the 

 base, a feature which would be emphasized if another whorl were 

 added. The later whorls, moreover, increase more rapidly than 

 in vadalica, which is more conoid, with straight sides to the 

 spire. 



352. Glessula perrotteti, Pfeiffer. 



Achatina perroteti, Pfeiffer, Revue Zool. 1842, p. 305; ibid., Symb. 



Hist. Helic. ii, 1842, p. 59. 

 Glandina perroteti, Philippi, Abb. Beschr. Conchyl. i, 1844, p. 135, 



Glandina, pi. 1, fig. 12. 

 AcJiatina perrotteti^ Pfeiffer, Mon. Helic. Viv. ii, 1848, p. 260 ; 



ibid., Conch.-Cab., Bulimus, 1860, p. 324, pi. 26, figs. 16, 17. 

 Achatina (Subulina) perrotteti, Albers, Die Heliceen, 1850, p. 195. 

 Okacina (Electro) perrotteti, Adams, Gen. Rec. Moll, ii, 1855, 



p. 106. 

 AcJiatina (Electra) perrotteti, Pfeiffer, Malak. Blatt. ii, 1856, 



p. 168. 

 Cionella (Glessula) perroteti, von Martens, Die Heliceen, ed. 2, 



1860, p. 254. 

 Stenoqyra (Glessula) perotteti, Nevill, Hand List, i, 1878, p. 168, 



ibid., J. A. S. B. 1, 1881, p. 137, pi. 5, figs. 17, 17 a. 

 Glessula perrotteti, Pfeiffer & Clessin, Nomencl. Helic. Viv. 1881, 



p. 330; Beddome. Proc. Malac. Soc. London, vii, 1906, p. 162 ; 



Pilsbry, Man. Conch, ser. 2, xx, 1909, p. 65, pi. 9, figs. 9, 10. 



Original description : " Testa elongato-conica, apice obtusius- 

 cula, nitide cornea, diaphana ; sutura profunda ; anfractibus con- 

 vexiusculis, ultimo tertiam longitudinis partem sequante ; columella 

 valde incurvata, abrupte truncata, apertura ovali. 



" Long. 25, diam. 11 mill." (Pfeiffer.} 



Hob. India : Nilgiris (Perrottet) Neddoowutton, Mlgiris 

 (Stanford) ; Pulney Hills (Beddome). 



353. Glessula prselustris, Benson. 



Achatina pralustris, Benson, A. M. N. H. ser. 3, v, 1860, p. 462 ; 



Pfeiffer, Mon. Helic. Viv. vi, 1868, p. 221. 

 Achatina (Electro) prcelustris, Hanley & Theobald, Conch. Ind. 



1870, pi. 17, fig. 6; var. fig. 7. 

 Stenoqyra (Glessula) praelustris, Nevill, Hand List, \, 1878, 



p. 171. 

 Glessula pralustris, Pfeiffer & Clessin, Nomencl. Helic. Viv. 



1881, p. 329 ; Jousseaume, M6m. Soc. Zool. France, vii, 1894, 



p. 293 ; Beddome, Proc. Malac. Soc. London, vii, 1906, p. 162 ; 



Pilsbry, Man. Conch, ser. 2, xx, 1909, p. 68, pi. 9, figs. 15, 16 ; 



Annandale, Rec. Indian Mus. vii, 1912, p. 33. 



Original description : * Testa ovato-oblonga, pertenui, fragili, 

 irregulariter plicato-striata, nitente, pallide luteo-cornea ; spira 

 pyramidata, apice obtuso, sutura profundiuscula, subcrenulata ; 

 anfractibus 8| convexiusculis, superna prope suturam tumidius- 

 culis ; ultimo 3 test superante, subinflato ; apertura verticali, 



