GLESSULA. 409 



387. G-lessula pachycheila, Benson. 



Achatina pachycheila, Benson, A. M. N. H. ser. 2, xii, 1853, p. 94; 



Adams, Gen. Rec. Moll, ii, 1855, p. 132 ; Pfeiffer, Mon. Helic. 



Viv. iv, 1859, p. 608. 

 Achatina (Electra) pachycheila, Pfeiffer, Malak. Blatt. ii, 1856, 



p. 168. 

 Glessula pachi/cheila, Nevill, Eniim. Helic. Ceylon, 1871, p. 3 ; 



Pfeiffer & Clessin, Nomencl. Helic. Viv. 1881, p. 331 ; Jous- 



seaume, Mem. Soc. Zool. France, vii, 1894, p. 295 ; Beddome, 



Proc. Malac. Soc. London, vii, 1906, p. 166 ; Pilsbry, Man. Conch. 



ser. 2, xx, 1908, p. 58. 

 Stenoyyra (Glessula} pachycheila, Nevill, Hand List, i, 1878, p. 172. 



Original description : " Testa ovato-oblonga. striatula, striis 

 exilissimis cont'ertis, obsoletis, spiraliter sublente decussata, nitida 

 fuscescente-cornea, translucente, spira elongata, subcouica, apice 

 obtuso, sutura leviter impressa; anfractibus 6, vix convexiusculis, 

 ultimo f longitudinis vix sequante ; apertura vertical!, oblongo- 

 ovata; peristomate intus albido-marginata, columella praearcuata, 

 margine basal i incrassato. 



"Axis 11, diam. 5 mill/' (Benson.) 



Hab. Ceylon : Heneratgodcle (Layard). 



" This little species of a group, which has so many representatives 

 in Ceylon, the Nilgherries, and the damp woody mountains of 

 North-eastern India, with a more slender form than A. oreas, 

 Nohis, is well distinguished from the allied forms by its peculiar 

 sculpture under the lens, and by the internal incrassation of the 

 peristome, a feature .which is also observable in the species 

 A. crassilabns, Nobis, from North-eastern India." (Benson.) 



Beddome states that this species and G. deshayesi, Pfr., are 

 closely allied, and often confused in collections, but G. pacliyclieila 

 is a narrower shell than the latter. 



Var. taprobanica, Pilsbry : (subspecies) 1. c. p. 58, pi. 7, fig. 16. 



" Shell smaller, very pale yellow. Sculpture of fine vertical 

 grooves ; close on the spire but rather widely, unevenly spaced on 

 the last two whorls ; no perceptible spiral lines ; two whorls at 

 the summit smooth. Aperture small, the outer lip rather thick ; 

 columella moderately concave, subvertically and not very deeply 

 truncate at the base. 



" Length 8-5 to 8-8, diam. 3-2, aperture 3 mm. ; whorls 6=1." 

 (Pilsbry.} 



Hab. Ceylon : Kandookerre (Layard). 



388. Glessula pyramis, Benson. 



Achatina pyramis, Benson, A. M. N. II. ser. 3, v, 1860, p. 463 ; 



Pfeiffer, Mon. Helic. Viv. vi, 1868, p. 226. 

 Achatina (Electra) pyramis, Hanley & Theobald, Conch. Ind. 1870, 



pi. 18, fig. 6. 



