158 HEIilCIB^. 



Ruperne obtuse angulato ; basi umbilico angusto perforate ; 

 apertuva ovato-transversa ; marginibus albis, reflexis, coujunctis. 



" Diam. 17, axis 7 mm." {Deshayes.) 



The foregoing short diagnosis is amplified, from specimens in 

 my own collection, as follows : — 



Shell perspectively umbilicated, depressed-conoid, from whitish 

 to pale or dark fuscous, unicolorous or variously banded with 

 brown. Apex scarcely raised, spire depressed, suture linear. 

 AVhorls 4-4|, finely striated, densely and minutely granulated, 

 rather flattened above, subangulated at the periphery, convex 

 below, angulated around the umbilicus ; the last suddenly dilated 

 towards the mouth, shortly and abruptly descending in front, 

 constricted below behind the peristome. Aperture ovate - 

 rotundate, margins approaching, united by a thin callus on the 

 parietal wall; peristome rather thin, slightly expanded and 

 reflexed, upper and outer margins curved, basal margin nearly 

 straight, columellar curved, triangularly dilated and slightly 

 overhanging the umbilicus, which shows nearly half of the 

 penultimate whorl. 



Major diam. ll~lo'5, minor 9-12-5, alt. 5*5-8 mm. 



Hal). India : Coimbatore (LescJtenavlt) ; Trichinopoly (Bhoi- 

 fonl). Ceylon {Templetou, Blanfonl, NeviU). 



An elegant species, apparently not uncommon. It is uni- 

 colorous or variously ornamented with bands ; the commonest 

 form seems to be the one with a rather broad supra-peripheral 

 band, one or two narrow ones alcove and several (five or six) 

 below it ; occasionally a broad infra-peripheral baud occurs. 



127. Planispira crassicostata, Benson. 



Helix crassicostata, Benson, A. M. N. H. ser. 2, ii, 1848, p. 159 ; 



Reeve, Conch. Icon, vii, 1852, pi. 125, ^^. 747; Hanlev & 



Theobald, Conch. Ind. 1870, pi. 50, fig. 10. 

 Helix {Planispira) crassicostata, Nevill, Hand l^ist, i. 1878, p. 77. 

 Helix (Trachia) ruginosa, var. crassicostata^ I'feift'er & Clessin, 



Nomencl. llelic. Viv. 1881, p. 181. 

 Helix {Plectotropis {Trachia)) rw/inosa, xn\: crassicostata, Tryow. 



Man. Conch, ser. 2, iv, 1888, p. 64, pi. 14, fig. 67. 

 Planisjnra ( Trachia) rnginosa, var. crassicostata, Pilsbrv, Man. 



Conch, ser. 2, iy, 1894, p. 116. 



Original description : — " T. late umbilicata, depresso-planata, 

 albida. plicis validis irregularibus obliquis, juxta carinam incras- 

 satis, munita ; spira? apice la^vigato, vix elevato ; anfractibus 

 4 plauatis, ultimo carinato, subtus valde convexo, antice deflexo ; 

 umbilico infundibuliformi ; apertura subhorizontali, transverse 

 ovato-rotundata, marginibus coiuiiventibus reflexis, callo brevi 

 junctis. 



" Diam. maj. 13, min. 10, axis 4 mill." {Benson.) 



Hah. India : fS. India {Jerdon) • Poena {Blanford, Fairhanh). 



