230 Mr. W. H. Bensou on new forms of Cyclostomacea. 



12. Pupina Arula, n. s. 



Testa imperforata, conoideo-ovata, longitudinaliter striatula, nitidis- 

 sima, fusco-rubella, apice conoideo, acuto, sutura calloso-margi- 

 nata ; anfractibus 6, ultimo spiram subsequante, antice breviter 

 ascendeute ; apertura circulari, angulo superiori acuto adjecto, 

 callo parietali superne lamella intrante munito ; columella pro- 

 funde iucisa, caualem extus appareutem, lingua lata parietali ob- 

 tectum, callisque duobus divergentibus marginatum, exhibente ; 

 peristomate obtuso, expansiusculo, extus marginato, margine dextro 

 supra medium arcuato ; basi foveata. Operculo ? 



Long. 9, diam. 5 mill. 



Hab. ad Yunglaw, in valle Tenasserim, raro occurrens. 



It has mucli affinity with P. aurea, Hinds, the superior canal 

 being rather simulated than actually developed, and being formed 

 by an angle, at the top of the otherwise circular aperture, cut off 

 from the lower portion, in part, by the parietal lamina. 



13. Pupina artata, n. s. 



Testa imperforata, pupiformi, ovato-acumiuata, politissima, fusco- 

 cornea, translucente, vel hyalina ; spira ovato-conoidea, apice obtu- 

 siusculo, sutura callosa, lineari ; anfractibus ^\ convexiusculis, 

 ultimo ^ testee partem superante ; apertura verticali, circulari, 

 bicanaliculata ; peristomate obtusiusculo, margine parietali superne 

 linguam acutam, callo verticali elongato, cum margine dextro sub- 

 parallelo, marginatum, exhibente, intra cum basali canalem incisum, 

 ascendeutem, extus calloso-margiuatum, eflformaute. Operculo tes- 

 taceo pauci-spirali, coucaviusculo, sutura elevata. 



Long. 6, diam. 3| mill. 



Hah. ad INIoulmein satis frequens. 



It has some affinity with the Australian species of the genus. 



Although the following shell is not Burmese, yet as it is found 

 in the Ultra-Gangetic portions of the Bengal Provinces, which 

 are geographically a continuation of the same zoological tract, I 

 shall give it a place here. 



14. Pupina imhiicifera, n. s. 



Testa imperforata, ventricose ovato -acuta, politissima, fuscescente, 

 pellucida ; spira conica, apice acutiusculo, sutura leviter impressa ; 

 anfractibus 6^ convexiusculis, ultimo spiram sequaute, ventri- 

 cosiori, antice subascendente ; apertura circulari, bicanaUculata, 

 peristomate pallide cameo, duplici, interno obtuso, breviter por- 

 recto, externo expanso, subreflexo, superne longe ascendeute, mar- 

 gine parietali calloso linguam acutam, cum margine dextro con- 

 niventem, et callum verticalem, validum, elongatum, arcuatim 

 divergentem, cum processu labri exterioris canalem efformantem, 



