CSLOKIT1S 167 



Erigone, Albers, Die Helic. 1850, p. 92 j Adams, Gen. Rec. Moll. 



ii, 1855, p. 202. 

 Semicornu (Klein), Adams, Gen. Rec. Moll, ii, 1855, p. 202. 



"Shell varying from discoidal and biconcave to depressed 

 subglobose with convex spire ; the apical whorl flattened or 

 sunken, and showing under a lens regularly arranged granules 

 or hair-points, which often persist over the whole shell. Aperture 

 lunate, the lip reflexed. 



" Animal with undivided sole, the edges of the foot lacking a 

 foot border ; sides irregularly granulated ; tail rounded, above 

 with an impressed longitudinal median line ; back from mantle to 

 head having a few longitudinal grooves. Mantle edge bearing a 

 small right body-lappet. 



" Jaw strong and ribbed. Radula having the middle cusp only 

 developed on central and inner lateral teeth, the cutting points 

 about as long as the basal plates ; side cusps completely absent, 

 but represented by small cutting points. Lateral teeth with 

 a long, oblique, bifid mesocone and a small ectocone. 



"G-enital system characterised by the lack of dart-sack or 

 other accessory organs on the female side, the spermatheca duct 

 rather long and closely bound to the uterus. Penis without 

 appendix, its cavity containing at the apex an imperforate fleshy 

 papilla, situated beside the opening of the epiphallus ; epiphallus 

 long, the penis retractor inserted upon it ; terminating in a 

 flagellurn and vas deferens." (Pilsbry.) 



140. Chloritis bifoveata, Benson. 



Helix bifoveata, Benson, A. M. N. H. ser. 2, xviii, 1856, p. 251 ; 



Hanley & Theobald, Conch. Ind. 1870, pi. 14, fig. 8. 

 Helix (Chloritis} bifoveata, Pilsbry, Man. Conch, ser. 2, vi, 1891, 



p. 245, pi. 50, fig. between 36 and 42. 

 Chloritis ( Trichochloritis) bifoveata, Pilsbry, op. cit. ix, 1894, p. 124. 



Original description : " T. umbilicata, subglobosa, utrinque 

 concava, oblique striata et minutissime granulata, luteo-fusca, 

 translucens ; spira profunde excavata, perspective umbiliciformis ; 

 anfr. 4J angusti, convexi, recedentes, ultimus prominens, inflatus, 

 superne compressus, caBteros occultans, subtus circa umbilicum 

 mediocrem perspectivum compresse angulatus ; apertura verticalis, 

 longissima, utrinque testam superans, angustissime lunata, superne 

 et inferne subangulata ; perist. simplex, acutum, expansiusculum, 

 marginibus remotis convergentibus, coluinellari brevi, subverticali, 

 leviter expanse. 



"Diam. maj. 10, min. 9, alt. 6 mill.; long, apert. 7, lat. vix 

 2 mill." (Benson.) 



Hab. Burma: Therabuin, Tenasserim Valley (Theobald}. 



A peculiar form, readily recognized by the sunken spire, in 

 which feature it approximates such species as C. ungulina, from 

 Ceram, and C. unguiculina, from Buru, while the umbilicus much 

 resembles that of C. Uconcava from China. 



