384 



Stenoyyra (Subulma)fairbanki,Pfeifte?k Clessin, Nomencl. Ilelic. 



Viv. 1881, p. 326. 

 Glessula fairbanki, Beddome, Proc. Malac. Soc. London, vii, 1906, 



p. 162; Pilsbry, Man. Conch, ser. 2, xx, 1908, p. 63, pi. 9, 



fig. 7. 



Original description: "A. testa subcylindraceo-turrita, stria- 

 tula, obsolete et. minutissime spiraliter decussata, polita, trans- 

 lucente, luteo-cornea ; spira versus apicem ad latera subconvexa, 

 vertice obtuso, sutura distincte impressa ; anfractibus 8, sub- 

 convexis, brevibus, 4 ultimis in diainetro lente accrescent] bus, 

 ultimo subtus rotundato J longitudinis sequante ; apertura sub- 

 obliqua, ovata, superne subtusque angtilata, margiuibus callo 

 junctis, columellari leviter arcuato, oblique truncate, dextro 

 basalique teuuibus. 



" Long. 12, lat. 4 mill. Apert., long. 3, lat. 2| mill." (Benson.} 



Hob. India : Mahableshwar (FairbanJc). 



" The nearest Mlgiri form is A. corrosula, Pfr. The more 

 cylindrical form below, the sculpture, shorter whorls, &c., safely 

 distinguish it." (Benson.} 



" A type-specimen sent me from Mahableshwar by Mr. Pair- 

 bank, and a few other examples I have seen in the Benson 

 collection and elsewhere, are all young shells with unformed lips. 

 It is smaller than litbes, but I cannot point out how it differs 

 otherwise." (Beddome.} 



While agreeing that the two forms are closely allied, they 

 appear to me sufficiently distinct to be retained as separate 

 species. G. Jiebes is not only proportionately larger but the last 

 whorl is shorter in proportion to the spire than is the case in 

 fairbanki, a feature which would still further be emphasized if one 

 or two whorls were added to the latter, whereas the reverse 

 would be the case if it were an immature form of Jiebes. 

 Glessula fairbanki differs from G. liebes principally in the convex 

 upper part of the spire which becomes cylindrical at the last 

 three whorls. It further differs in being more polished, in the 

 striae being much finer, and in the whorls being less closely 

 coiled; all, except the last \\horl, show numerous opaque, 

 narrow, spiral lines. Hanley's figure of the species is very 

 good. 



A specimen in the British Museum, from the type-locality, 

 possesses 8| whorls, but it has the same dimensions as the 



type- 

 Major Peile possesses a single specimen from Mahableshwar 

 composed of eight whorls. 



350. Glessula vadalica, Benson. 



AcJiatina vadalica, Benson, A. M. N. II. ser. 3, xv, 1865, p. 15 ; 



Pfeitfer, Mon. Helic. Viv. vi, 1868, p. 229. 

 Achatina (Electro) vadalica, Hanley & Theobald, Conch. Ind. 1870. 



pi. 35, fig. 5. 



