PLANISPIRA. 155 



122. Planispira al"bicostis, Pfeiffer. 



Helix alhicostk, Pfeiffer, P. Z. S. 1860, p. 134 ; Malak. Bliitt. vii, 



1861, p. 238. . ^^ ^ ^^ ,. ^„ 



HeUx {Tmehia) alhlcosfis, Pfeiffer .^' Clessin, Noraencl. Helic. Viv. 



1881, p. 181. ^ , 



Planispira (Trachia) albicostis, Pilsbry, INlau. Couch, ser. J, ix, 



1894, p. 116. 

 Oriqiaal descriptiuii :— " T. sublate umbilicatn, depressa, tenuis, 

 granulato-i-ijgosa et pilis brevibus obsita, cornea, costulis obliquis 

 albidis mimita; spira paruin elevata ; anfr. 4 convexiuscuh, 

 ultimus supei-ue subangulatus, supra angulum leviter sulcatus, 

 antice deflexus ; apertura perobliqua, ovalis ; perist. tenue, mar- 

 ginibus fere coutiguis, supero expansiusculo, basali breviter 

 reflexo. 



" Diam. maj. 9^, uiin. 8, alt. 4i mill.'' (Pfeifcr.) 

 Hah. India : Ahinednuggar. 



The species bears a superiicial reseuiblauce to P. crassicostata, 

 but in the latter tbe c-osta? are much more prominent and more 

 widely spaced, the umbilicus is a Htrle more contracted, and the 

 periphery is acutely keeled, the keel being pinched above and 

 below, and, owing to the strong costa;, it is crenulate, whereas in 

 P. albicostis the periphery is simply angulated with a shallow 

 furrow above it. The principal character, however, differentiating 

 the two species is the presence in P. albicostis of crowded short 

 hairs, placed on raised tubercles, arranged in rows which obliquely 

 intersect the lines of growth. 



123. Planispira asperella, Pfeiffer. 



Helix asperella, Pfeiffer, Symb. Hist. Helic. iii, 1846, p. 78; 

 Peeve, Conch. Icon, vii, 1852, pi. 125, fig. 752 ; Pfeiffer, Conch.- 

 Cab., Helix, ii, 1853, p. 93, pi. 82, figs. 22-25 ; Hanley & 

 Theobald, Conch. Ind. 1875, pi. 131, figs. 8, 9; Kobelt, 111. 

 Conch. Buch, ii, 1879, pi. 76, fig. 7. 



Helix {Planispira) asperella, Nevill, Hand List, i, 18/8, p. //. 



Heliv (Trachia) asperella, Martens, Die Heliceen, ed. 2, 1860, 

 p. 160 ; Tryon, Man. Conch, ser. 2, iv, 1888, p. 62, pi. 14, 

 fig. 58. ^ . 



Planispira (Trachia) asperella, Pilsbry, Man. Conch, ser. 2, ix, 

 1894, p. 116, pi. 19, fig. 25 (shell) ; pi. 34, fig. 4 (radula). 



Helix granif era, Benson, MS. 



Original description : — " T. umbilicata, depressa, granulis 

 minutis undique exasperata, sordide albida, fasciis rutis vane 

 cingulata; spira vix elevata; anfr. 4 planiusculi, ultimus basi 

 con^vexus, antice parum descendens, juxta umbilicum mediocrem, 

 infundibuliformem subcompressus ; apertura obliqua, lata, sub- 

 orbicularis ; perist. undique expansum, marginibus approximatis, 

 callo tenui juuctis." {Pfeifcr.) 



Major diam. 13-1 G, uiinor 10-13, alt. 6^-8] mm. 



Bah. India : Bundelkhund (Benson) ; Chanda (Nevill). 



