118 HELIX 8. 22 
485. H. sequax Benson. 4| 
« Testa perforata, subconoideo-depressa, fere tenui, oblique 
striatula, sub lente conferüssime spiraliter obsolete striata, 
nitida, diaphana, livide olivaceo-cornea; spira depresso -conoi- 
dea, lateribus convexiusculis, apice obtuso, sutura impressa, 
subcanaliculato- marginata ; anfractibus 5!/5 convexiusculis, sensim 
acerescentibus, ultimo antice (aetate) vix descendente, ad peri- 
pheriam compresse rotundato, subtus convexiusculo, medio 
excavato; apertura obliqua, transversim lunata; peristomate 
tenui, recto, margine basali arcuato, columellari breviter reflexo. 
— Diam. maj. 48, min. 15, axis 7 mill.» (B.) 
Helia sequao; Bens. in Ànn. and Mag. n. h. 3d. ser. III. (Apr. 
1859) p. 270. (Malak. Bl. 1859. p. 23.) 
Habitat ad Darjiling et in valle Rungun. 
* 
486. (3472. bisculpta Bens. — Pella A?. 84. —  Promont. bonae 
spei. (III. 72.) 
481. H. Causia Benson. Tt 
«Testa perforata, conoideo-depressa, solidula, oblique 
striatula, striis minutissimis confertissimis spiralibus sub lente 
signata, nitidula, fulvescenti-cornea, subtus pallidiori; spira 
conoidea, sutura impressa, submarginata, apice obtuso, hya- 
lino; anfractibus 5 convexiusculis, ultimo ad peripheriam. valde 
rotundato; apertura obliqua, subrotundato- lunari, peristomate 
acuto, recto, margine columellari breviter expanso-reflexo. — 
Diam. maj. 7, min. 6, axis 4 mill.» (B.) 
Helix Causia Bens. in Ann. and Mag. n. h. 3d. ser. IHI. (May 
1859) p. 388. 
Haaitat ad. Phie Thán vallis Tenasserim. 
488. H. Bourguignatiana Mabille et Le Mesle. T 
« Testa obtecte perforata, subgloboso-depressa, pellucida, 
nitida, cornea, supra convexa, subtus planulata, striatula; striis 
longitudinalibus subobsoletis et transversis impressa; anfracti- 
bus 6, regulariter crescentibus, convexiusculis; ultimo magno, 
rotundato; apertura obliqua, subrotunda; peristomate acuto, 
. recto, simplice. — Diam. maj. 6, min. 5, alt. 3 mill.» (M.) 
Zoniles Bourguignatianus Mabille et Le Mesle in Journ. Conch. 
XIV. 1866. p. 126. t. 7. f. 6. 
Habitat in Cambodja (Le Mesle). 
