] 90 Mr. G. B. Soweiby on new 



convexus, iufra coiitractus, ad basin valde sulcatus, vix rostratus; 

 apertura mediocriter lata, intus paucilirata ; labrum acutum, 

 extus incrassatum ; columella rectiuscula ; canalis brevissimus. 

 Long. 6|, diam. 2k mm. 



A small very delicately-coloured shell allied to C. ea;i»iia, 

 Beeve, compared with which species it is smaller, very dif- 

 ferent in colour and pattern, shorter at the base, and its spire 

 is more regularly pyramidal. 



Fam. Neritidse. 

 Neritu cojistellaia, sp. n. 



Testa oblique ovata, solidiuscula, Itevis, purpurasceus, maculis par vis 

 albidis inaxjualibus conspersa ; spira brevissima, planuiata, fere 

 immersa ; anfractus ultimus rotunde convexus, eoncentrice ob- 

 scurissime striatus, subobsolete spiralitcr sulcatus ; apertura 

 semicircularis, intus Irevis ; labrum acutum ; area columellari 

 lajvis, Icviter convex a, ad margiuem minute irregulariter deuti- 

 culata. 



Alt. 6|, diam. 9 mm. 



This shell bears some resemblance to a large JSeridna 

 Jluviuiilis, while in form and substance it might almost he a 

 miniature JS'erita Rumphi, Recluz, but the specimen^!, which 

 are fairly numerous^ are very uniform in size, colour, and 

 general characters. 



The interior of the aperture is quite smooth. 



Fam. Scalariidae. 

 f:'cala}ia octogona, sp, n. 



Testa pyramidalis, alba, laevis ; spira elata, acuta ; anfractus 8, 

 rotundati, costis 8 acutis erectis leviter obliquis instruct! ; aper- 

 tura circularis. 



Long. 12^, diam. 6 mm. 



A white Scdlaria of simple pyramidal form, with eight 

 erect sharp scarcely reflexed ribs. 



Scalaria interstriata , sp. n. 



Testa acuminata, alba, multicostata ; spira acute turrita ; anfractus 9, 

 convexi, primi 2-3 Iseves deinde gradatuli, costis elevatis circ. 25, 

 leviter retlexis, superne acute angulatis instructi, spiraliter striati; 

 apertura subcircularis ; peristoma mediocriter crassum, postico 

 angulatum. 



Long. 9, diam. ;5| mm. 



