174 HELICIDJE. 



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

 umbilicus, passing nearly through the shell ; surface faintly 

 marked by the stride of growth ; aperture rendered somewhat 

 quadrangular 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 r = 20'25 mm.]; height less than I inch 

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



Hob. Burma : Tavoy (Gould) ; Moulmain (Stoliczlca, Fea), var. 

 India : Khasi Hills (Stoliczka) ; Cachar (Godwin- 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 vori Martens (Sitz.-Ber. Ges. Naturf. Fr. 

 Berlin, 1885, p. 192). ' 



Var. merguiensis. Philippi. 



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



Conch. Icon, vii, 1854, pi. 177, fig. 1205: Hanley & Theobald, 



Conch. Ind. 1870, pi. 14, fig. 7. 

 Helix (Plectotropis) gabata ( = merguiensis), Tryou, Man. Conch. 



ser. 2, iv, 1888, p. 57, pi. 14, fig. 83. 

 Planispira ( Trachia) gabata, var. merguiensis. Pilsbry, Man. Conch. 



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



Hob. Burma : Mergui (Philippi) ; Mergui Archipelago, King 

 Island (Anderson). 



Differs from typical gabata in having the spire raised, the 

 supra-peripheral keel less acute and more compressed, the 

 umbilicus narrower, 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. fi". 8 

 Pfeitfer, Novit. Conch, v, 1877, p. 37, pi. 143, figs. 1-8 ; Dolrn, 

 Conch.-Cab., Helix, iv, 1894, p. 578, pi. 170, figs. 5-7. 



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



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

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



Chloritis (Trichochloritis) hemiopta, PilsLry, Man. Conch, ser 2 ix 

 1894, p. 124. 



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



Original description : " H. testa anguste uinbilicata, depresso- 

 conoidea, vix striatula, laeviuscula, minutissiine 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- 



