174 HELICID^. 



convex, descending suddenly into a broad, deep, tunnel-sliaped 

 mnbilicus, passing nearly through the shell ; surface faintly 

 marked by the striae of growth ; aperture rendered somewhat 

 (juadrangular by the junction of the lips, and the two angles at 

 the keel, and the ridge at the umbilicus ; lip white, reflected, 

 commencing below the keel, then rising to a level with it. 



Diam. 4 inch [ = 20*25 mm.] ; height less than ^ inch 

 [ = 10 mm.]." (Gould.) 



Hah. Burma : Tavoy {Gould) ; Moulmain (Stolkzica, Feci), var. 

 India : Kha^i Hills (Stoliczka) ; Cachar {Godivin- Austen). 



A well-marked species, characterized by the flattened spire and 

 carinated whorls. 



Wallace mentions the species from Menado, Celebes (P. Z. S. 

 1865, p. 408) but this record was based on a mistaken identifica- 

 tion. The Celebes form has since been made the type of another 

 species — pilisparsa — by von Martens (Sitz.-Ber. Ges. Naturf. Fr. 

 Berlin, 1885, p. 192). " 



Var. merguiensis, Philippi. 



Helix merguiensis, Philippi, Zelts. Malak. iii, 1846, p. 192 ; Reeve, 



Conch. Icon, vii, 1854, pi. 177, fig. 1205; Ilanley & Theobald, 



Couch. lud. 1870, pi. 14, fig. 7. 

 Helix (Plectotropis) qahata ( = merguiensis), Tiyou, Man. Conch. 



ser. 2, iv, 1888, p. 57, pi. 14, fig. 88. 

 Planispira {Trachia) qahata, var. merguiensis, Pilsbrv, Man. Conch. 



ser. 2, ix, 1894, p. 116. 



Hah. Burma : Mergui {Fliilippi) ; Mergui Archipelago, King 

 Island {Anderson). 



Differs from typical rjahata in having the spire raised, the 

 supra-peripheral keel less acute and more compressed, the 

 umbilicus narro\A'er, and the margins of the peristome more 

 reflexed. 



147. Chloritis hemiopta, Benson. 



Helix hemiopta, Benson, A. M. N, H. .ser. 3, xi, 1863, p. 318 ; 



Hanley & Theobald, Conch. Ind. 1870, pi. 30, fig. 4, pi. 53, tig. 8 ; 



Pfeitler, Novit. Conch, v, 1877, p. 37, pi. 143, tigs. 1-8 ; Dohrn, 



Couch.-Cab., Helix, iv, 1894, p. 578, pi. 170, tigs. 5-7. 

 Helix (Planispira) hemiopta, Nevill, Hand List, i, 1878, p. 78. 

 Helix (Obba (Neocepolis)) hemiopta, Pilsbrv, Man. Conch, ser. 2, vi, 

 1891, p. 238, pi. 31, tigs. 21, 25, pi. 64, tigs. 67-72. 

 Chloritis ( Trichochloritis) keniiopta, Pilsbry, Man. Conch, ser. 2, ix, 



1894, p. 124. 

 Planispira hemiopta, Godmn-Austen, P. Z. S. 1895, p. 442. 



Original description : — " II. testa anguste umbilicata, depresso- 

 conoidea, vix striatula, laeviuscula, miuutissime granulata, opaca, 

 albida ; anfractu ultimo superne castanea, versus peripheriam 

 suturiatore ; spira convexo-conoidea, apice obtuso, sutura vix 

 impressa ; anfractibus 4^, convexiusculis, sensim acrescentibus, 

 ultimo superne prope peripheriam obtuse angulatam concavi- 



