a ie 
acerescentes, sulura anguste marginata disjuncti, ultimus 
subeompressus, basi pallidior, medio sat excavatus. Aper- 
tura parum obliqua, longe elliptica, valde exeisa; peristoma 
rectum acutum, margo collumellaris superne breviter sed 
valde reflexus, fere revolutus. 
Diam. 31,8, alt. 16, apert. lat. 16,8, long. 12, alt. 12 mm. 
Bangkok. 
Macrochlamys heptagyra n. Sp. 
T. semiobtecte perforata, discoidea, pro genere soli- 
dula, subtiliter striatula, lineis spiralibus sub lente fortiore 
vix conspicuis decussatula, valde nitens, flavo-cornea. Spira 
brevissime conoidea, apice vix emerso. Anfr. 7 lente 
accrescentes, sutura bene impressa, anguste marginata 
disjuneti, convexiusculi, ultimus basi convexior. Apertura 
parum obliqua, elliptica, valde excisa; peristoma rectum, 
acutum, margo basalis leviter, collumellaris magis calloso- 
inerassatus. 
Diam. 27,8, alt. 11, apert. 15, long. 9,8, alt. 9,2 mm. 
Kanburi. 
Maecrochlamys brunnea n. Sp. 
T. rimata, depressa, solidula, subtiliter striatula, 
nitida, fulvobrunnea. Spira breviler convexa. Anfr. 5/e 
convexiusculi, lente accerescentes, sutura modice impressa, 
anguste marginata disjuncti, ultimus bene convexus. Aper- 
tura late elliptica, sat excisa; peristoma rectum, acutum, 
margo columellaris calloso-inerassatus, superne brevissime 
reflexus. 
Diam. 9, alt: 5. 
Bangkok, Muoklek, Hinlap. 
Durgella siamensis n. Sp. 
T. rimata, depresso-globosa, tenuis, pellucida, sub- 
tilissime striatula, nitens, corneo-flava. Spira brevissime 
convexa apice obtuso. Anfr. 4 sat celeriter accrescentss, 
g* 
