The following Valvata was found l)y Mr. Augustus Simson 

 in a small trickliag stream in Grould's Country, north-eastern 

 Tasmania. It is the first Valvata known in the island, or in 

 Australia. 



Valvata TASMANiCA. n.s. V.t. mmuta/jlobosS turbinata, profuiide 

 lateque umbilicata, pallide cornea, epidermide atrato maculata, solidi- 

 iiscnla, senvpellw-lda ; atifractibas 4, rotnit'latin, tenuinsime luidulose 

 striatis, ad suturas subcanaliculatis ; apertura semilunari, rcjlexa, 

 postice angulata ; labro medio producto, antice subeverso ; labia recto 

 tenui ; umbilico margimito. Operculum corneum, ovale, spirale. 



Long. 1. Lat. 1, millimeter. 



V. shell minute, globosely turbinate, deeply and widely 

 umbilicate, pale horny, spotted with a blackish epidermis, 

 rather solid, semipellucid, whorls -i, rounded, faintly undu- 

 lately striate, subcanaliculate at the sutures ; aperture semi- 

 lunate, subreflexed, posteriorly angulate, outer lip produced in 

 the middle, subeverted anteriorly, inner lip straight and thin, 

 umbilicus margined. Operculum horny, oval, and subspiral. 



