ee ea ee ne ee 
from Burmah and the Andamans. 193 
duobus extus divergentibus marginatum exhibente; peristomate 
expansiusculo ; margine dextro, supra medium arcuato, basalique 
crassiusculo obtusis. 
Long. 6, diam. 34 mill. 
Habitat in regione Peguensi. Mus. Soc. Asiat. Calcuttensis. 
Closely related to the Tenasserim Pupina Arula, B., but, 
independently of its smaller size, differing in form, proportions, 
translucence, and absence of sculpture. 
8. Cyclophorus flavilabris, B. 
Testa umbilicata, subgloboso-turbinata, suboblique striata, striis 
confertis spiralibus decussata, castanea, fascia saturatiore, sub 
altera angustiore albida peripherica, ornata, periomphalo pallidiore ; 
spira elevato-turbinata, apice vix acutiusculo, sutura impressa, 
superne marginata; anfractibus 5, convexis, ultimo antice sensim 
leviter descendente ; apertura subobliqua, circulari, peristomate 
breviter adnato, superne extus angulato, expanso, crassiusculo, 
flavo ; margine columellari latiore, subrevoluto, umbilicum angus- 
tum leviter celante. Opere. f 
Diam. major 51, minor 43, axis 36 mill. 
Habitat in Provincia Pegu. 
A single specimen of this fine species, submitted for exami- 
nation by Mr. Theobald, is remarkable for its clear yellow peri- 
stome, the colour of which extends some way into the aperture; 
and for the margination of the suture above, bounded by a 
strongly impressed line; this margination appears to be a con- 
tinuation of the pale band of the lower whorl. 
9. Hydrocena Frustrillum, B. 
Testa imperforata, ovato-oblonga, solidiuscula, spiraliter confertissime 
tenuisulcata, succinea (?); spira subpyramidata, apice obtusiusculo, 
sutura impressa; anfractibus 5, convexis, ultimo ? teste sub- 
zequante; apertura obliqua, truncato-ovata, superne necnon ad 
latus sinistrum angulata, peristomate tenui, non continuo, pariete 
calloso. Opere. ? 
Long. 23, diam. 14 mill. 
Habitat in Regno Ava. Teste Prof. Oldham. 
The specimens receiyed were taken in a dead state. It is 
probable that they have an amber hue when im a fresh condition. 
The shell differs from the Thyet Myo H. Illex, B., in the ab- 
sence of the very elongate slender spire of that species, in the 
want of an umbilicus, and in the form of the aperture, which 
presents internally an angle at the junction of the columellar lip. 
10. Hydrocena Rawesiana, B. 
Testa imperforata, subgloboso-conica, solida, confertim spiraliter 
striata, luteo-albida ; spira conica, apice obtuso, sutura profundi- 
