l8 SMITH : LA\D SHELLS FROM NEW GUINEA. 



I. Microcystina sappho, Brazier. 



Helix (Thalassia) sappho, Brazier, Proc. Linn. Soc, N. S. 



Wales, 1876, vcl. i., pp. 100 and 119; Canefri, Ann. 



Mus. Gen., vol. xix., p. 95 (Thalassia) ; Hedley, P. 



Linn. Soc, N. S. W., 1891, vol. vi., p. 75, pi. ix., f. 7. 

 Hab. : Yule Island (Brazier) ; Maiva and Mission Hill 



(Hedley). 



Var. mailuensis. 



This form differs froni the type in being more highly 

 glossy, and in having the spire slightly more 

 elevated. 



An examination of a series of specmiens of the typical form 

 from Maiva, kindly sent to the Museum by Mr. C. Hedley, shows 

 that the surface is microscopically striated, spirally, both above 

 and beneath. In the shells from Mailu, hov/ever, this micro- 

 scopic striation does not appear to be present, the surface in 

 consequence being more polished. 



A few examples of the normal form were also obtained at 

 Mailu. 



In the variety, the tongue-like reflexion of the columella is 

 very strongly developed. 



2. Charopa nigrofusca, n. sp. (PI. II., Figs. 10-12). 



Testa depressa, orbicularis, late et aperte umbilicata, 

 saturate fusca, liris tenuissimis confertis flexuosis obliquis 

 oniata ; spira depressa, supra anfract. ultimum vix elata ; 

 anfractus 4^ rotundati, regulariter accrescentes, sutura profunda 

 sejuncti, primus laevis, caeteri costulati, ultimus ad peripheriam 

 acute rotundatus, haiul descendens ; umbilicus latus, perspec- 

 tivus, diam. totius ^ adaequans ; apertura latissime lunata, con- 

 color ; peristoma tenue, margine columeliari baud reflexo. 



Diam. maj. 6 millim., min. 5, alt. 2f. 



Hab. : German New Guinea. 



3. Macrochlamys papuana, n. sp. (PI. 11., Figs. 8, 9). 



Testa orbicularis, depressa, anguste perforata, rubello-cornea, 

 nitida, striis increment! tenuissimis sculpta ; spira parum elata, 

 ad apicem obtusa ; anfractus 5-^convexiusculi, lente accrescentes, 

 infra suturam impresso-marginati, ultimus ad peripheriam obso- 



