174 MESSES. J. C. MELVILL AND E. STANDEN ON 



189. Neeita signata, Macleay. 

 Station 5, Boydong Cays. 



190. Neeita undata, L. 



Station 4, Orihans Eeef ; Station 13, Murray Island ; Station 5, 

 Boydong Cays. 



191. Neeita (Thelicosttla) albicilla, L. 



192. Neeita (Peleeonta) tunicdlata, Bve. 



193. Neeita (Peleeokta) plicata, L. 

 Station 13, Mer (Murray Island). 



Magadis *, genus novum. 



Testa imperforata, depressa, orbicularis, albo-calcarea, longi- 

 tudinaliter arete lamellata, lamellis irregularibus ; anfractus 3, 

 quorum apicalis obtusus, globularis, interstitise inter lamellas 

 arete et puleherrime sub lente spiraliter striatse ; apertura lunaris ; 

 peristoma rotundum, fere eontinuum; labri intus margo eolu- 

 mellaris latus, planatus, dentibus minutissimis prseditus, extus 

 crassiuseulus, planatus, Isevis. Operculum ? 



194. Magadis eumeeintha t, sp. n. (PI. 10. figs. 8, 8 a.) 

 M, testa ut supra. Alt 2"25, diam. 4'50 mm. 



Station 14, Mer, ebannels between reefs. 



A truly remarkable mollusc, and one for tbe reception of 

 which it is imperative to create a new genus. It is undoubtedly 

 a neritoid, but the close longitudinal lamellae suggest affinity 

 with Vanikoro, Quoy, e. g. F. Gueriniana, Hecluz. 



It is unlike any shell known, either recent or fossil, being 

 small, depressed, orbicular, imperforate, of a chalky yellowish- 

 white consistency, longitudinally closely lamellate, three-whorled 

 (inclusive of the obtuse and globular apical whorl); the inter- 

 stices between the lamellae are everywhere closely and very 

 beautifully striate; aperture lunar and wholly neritoid; colu- 

 mellar area straight, wide, and furnished with numerous very 

 fine and minute teeth ; peristome almost continuous ; outer lip 

 lunar, smooth, somewhat thickened. We have not seen the 

 operculum. 



* fiaydSis, a harp. 



t Etmierintha, ev firipivs, well furnished with strings or lamellas. 



