162 



the jDallial and muscu'ar impressions alone being iridescent, 

 ligament long, conspicuous. 



A truly magnificent species, whicli is so large that it must 

 always be a conspicuous object, yet the peculiar and brilliant 

 green enamel of the edges makes it still more so. It is only 

 found in deep water in Storm Bay. The only shell approach- 

 ing to it in character is M. latus, of New Zealand. 



Pythixa tasmaxica. U.S. p. t. parva suborbiculari, convexa, alba, 

 8ulcis concentricis et costis bifariam radiantibus eleganter clathrata ; costis 

 angulatis postice eurvatis parumque elevatis, umbonibus, submedianis obliquiis, 

 parvh. Long. 7. Lat. 8. Alt. 3. 



P. shell suborbicular, convex, white, elegantly latticed with 

 concentric sulci and ribs radiating in opposite ways ; ribs 

 angulate and curved, and slightly raised behind, umbones 

 submedian, oblique and small. 



This e'egant Pythina is very distinct from the common P. 

 deshayesi, which is larger, has the divaricating ribs somewhat 

 lamellose behind, and is not latticed with transverse sulcations. 

 King's Island, rare. 



Tellixa mari-E. T. t. transversa dlipitica, subinflata, nitente, lactea, tenui 

 ccquUaterali, incequivaZvi, postice Jiiante, antice late rotundata, postice vix 

 attenuato, flexura minima, undique crebre tenuiter sulcata, ligamento pallide 

 castaneo prominulo. Long. 22. Lat. 28. 



T. she 1 transverse, elliptical, subinflated; shining, milk 

 white, thin, equilateral, inequivalve, gaping posterioriy, widely 

 rounded in front, scarcely attenuated behind, flexure very 

 slight, thickly and finely sulcate, ligament pale chestnut, 

 somewhat prominent. 



Rather uncommon. South Coast. W. Legrand. A white 

 shell, with no determinate characters except its oval form, 

 absence of color, and almost perfect absence of flexure. There 

 are are three small hinge teeth in one valve, and two in the 

 other, and the pallial sinus is vei'y large. 



LuciNA MINIMA. U.S. L. t. parva subventricosa, oblonga transversa, tenui. 

 Ma, tenui-costata,costis numerosis concentrice, tenuiter, regulariter eleoantissi- 

 Ttieque striata, valde incequHaterali, latere antico longiore rotundato, postico 

 latiore, niargine integro, umhonihus productis obliquis, parvis incurvis, con- 

 spicue concentrice striatis ; valvis intus albis, impress, mus. conspicuis ; valv. 

 dext. in med. unidcntato dente bifida, vol. sinis. bidentato, dente antico bifida. 

 Long. 8. Lat. 9. Alt. 5. 



L. she 1 small, subventricose, oblong, transverse, thin, 

 white, slenderly ribbed, ribs numerous, finely regu arly and 

 most e egant'y striate ; very inec|uilateral, anterior side the 

 longer, rounder, the posterior side wide ; margin entire, um- 

 bones produced, oblique, small, incurved, conspicuously concen- 

 trically striate, valves white within, muscular impression con- 

 spicuous, right valve unidentate with a bifid tooth ; left valve 

 bidentate, the anterior one bifid. 



Badger Island, rare. 



