116 LIMNvEID.E. 



obliqiiatis ; apertura .semi-lunari, obliqua, alba ; colore externo 

 fuisco, subcoi^neo. 



Shell greenish brown, finely ridged ; spire rather flattened ; 

 wliorls 3, last large ; aperture angularly raised, then depressed, 

 sloped, expanded below, rather pi-odueed ; lower disc broadly 

 concave. 



Alt. 10-25, diam. maj. 20'5 mm. (fig. 10 in Conch Ind.). 



Hah. India; Ceylon. (Generally diffused.) 



The P. coromandelicus, Kiister, described and figured by Sowerby 

 in Eeeve's ' Conchologia Iconica,' vol. xx, pi. 4, sp. 34, seems to 

 be a synonym. 



Var. ebiirneus, Oray, Sowerby, in Reeve, Conch. Icon, xx, pi. 5, 

 sp. 38 ; Clessin, in Conch.-Cab. 1885, p. 226. 



Shell high, tumid, undulating, smooth, white, banded with 

 chestnut in the middle of the whorls ; apex small ; whorls 3, 

 rather flattened above then sloped, inflated below ; last large, 

 high, rapidly increased ; lower disc convex, apical whorl hidden ; 

 aperture large, flexuously depressed above, inflated below, 

 produced. (Sowerby in Reeve.) 



Diam. maj. 17, diam. min. 13-5 mm. (fig. 38 6 in Conch. Icon.). 



Hah. Ceylon. 



Var. brunneus. Gray, Adams, Genera, ii, 1858, p. 261 ; Sowerby, 

 in Eeeve, Conch. Icon, xx, pi. 5, sp. 40 ; Clessin, in Conch.- 

 Cab. 1885, p. 226. 



Shell subglobose, high, smooth, ferruginous, spire small ; wliorls 

 contracted above, raised, a little angular above the suture, then 

 rounded, inflated in the middle ; lower disc narrowly umbilicated ; 

 aperture semilunar, produced and expanded below. (Sowerby in 

 Reeve.) 



Alt. 8-25, diam. maj. 12-5 mm. (fig. 40 6 in Conch. Icon.). 



Hah. Bombay. 



The following are the dimensions taken from Sowerby 's figures 

 in Eeeve: alt. (excluding labrum) 6"5, diam. maj. 11 '25. diam, 

 min. 9 ; aperture : alt. (including labrum) 8, diam. 6 mm. 



There can be little doubt that it is a small variety of PLexasfus. 



Var. zonatus, Bunl-er, in Conch.-Cab. 1884, p. 117, pi. 17, 

 fig. 1. 



Alt. 6|, diam. 16 mm. 



Hah. Ceylon. 



Appears to be irregularly transversely banded with purplish red. 



228. Planorbis zebriniis, Danl-ei 



Plaiwrlns zebrinu^, Uuiiker, 

 figs. 11-13. 



Oriqiual dearription : — PI. testa solida, straminea strigisque riifis 



Plaiwrhis zebri/ins, Uuiiker, Conch. -Cab. 1850, p. -j". pi. 6, 

 fi"s. 11-13. 



