100 TROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



caeteri minus convcxi; apertuva inverse auriformis, concolor; peristoma 

 teniie, pallidum leviter expansum ; lamella superior tenuis, marginem 

 attingens, inferior obliqua, subcolumellaris parva, tenuis, ad marginem 

 labri vix producta ; plica suturalis unica, supra aperturam visibilis, 

 suturae vix parallela ; lunella nulla. Longit. 14, diam. 3mm. 



J7a5.— South Celebes, at 2,000 feet. 



The lines of growth are a little coarser behind the lip than upon 

 the rest of the surface. The apex has a drawn-out appearance, the 

 subapical whorls being somewhat long. 



19. Clatjsilia usitata. PL VII, Fig. 27. 



Testa C. subpolitoi similis, sed paulo major, saturate fusca, versus 

 apicem pallida; apertura major; lamella subcolumellaris marginem 

 attingens ; plica suturalis unica, magis ad dextram ; lunella distincta, 

 in medio angulata, superne plica suturali conjuncta. Peristoma 

 angustum, leviter expansum, margiue externo (sinistro) pallide 

 rufescente, dextro albescente. Longit. 16, diam. 3-5 mm. 



^«i.— South Celebes, at 2,000 feet. 



The slightly larger size, different colour, the presence of a lunella, 

 and other characters, distinguish this from the preceding species. 



20. Cyclottjs fasciatus, Martens. 



C. fasciatus, Martens, Preuss. Exped. Ost-Asien, Zool. ii, p. 118, 

 pi. i, fig. 3; Mai. Blat. 1872, vol. xx, p. 158. 



Hah. — South Celebes, at 2,000 feet (Everett) ; near Macassar 

 (Martens). 



21. Cyclottjs politus, Sowerby, var. 



iZrtS.— South Celebes, at 2,000 feet. 



A comparison of the types shows that C. politus and C. Amhoinensis, 

 Pfr., are merely varieties of one and the same species ; and I have 

 a very strong belief that C. fulmivulatus, Martens, is also conspecific. 

 The elevation of the spire, the width of the umbilicus, and the thickness 

 of the peristome, are variable. The specimens from South Celebes 

 are of the same form as the var. Amhoinensis, that is, are less elevated 

 in the spire than the type shell of politus. They also generally have 

 the peristome somewhat less thickened ; but the columellar margin 

 exhibits the internal thickening for the support of the operculum, 

 which is present in all the forms. 



22. Cyclottjs pyeostoma. PI. VII, Figs. 1-3. 



Testa orbicularis, apcrte et perspective umbilicata, solida, epidermide 

 nigro-olivacea, plus minus detrita, induta, pallide rufescens, rufo 

 indistincte flamniTilata et maculata, infra pcripheriam zona lata nigro- 

 olivacea picta ; spira leviter elata ; anfractus 5, convexi, celeriter 

 accrcscentes, superiores tres loeves, lineis incrementi striati, ult. et 

 peniTlt. superne spiraliter lirati, striisque obliquis arcuatis fortiter 

 sculpti, ultimus ad peripheriam subcarinatus, antice descendens, infra 

 baud spiraliter striatTis; apertura obliqua, saturate sanguineo-ruf a ; 



