from Burmah and the Andamans. 193 



duobus extus divergentibus marginatum exhibente ; peristomate 

 expansiusculo ; margine dextro, supra medium arcuato, basalique 

 crassiusculo obtusis. 



Long. 6, diam. 3^ 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. Cyclop horus flavilabr is, 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. Operc. ■ ? 



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 f testae sub- 

 sequante; apertura obliqua, truncato-ovata, superne necnon ad 

 latus sinistrum angulata, peristomate tenui, non continuo, pariete 

 calloso. Operc. ? 



Long. 2$, diam. If mill. 



Habitat in Regno Ava. Teste Prof. Oldham. 



The specimens received were taken in a dead state. It is 

 probable that they have an amber hue when in 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- 



