15 



la suture lignes d'accroissement plus foncees et lavees de bistre sur la zone sutu- 

 rale; une bände brune presque efifacee et large de deux millimetres, court au-dessous 

 de la ligne mediane du dernier tour, sur la base duquel, de meme que pres de la 

 suture, il ya seulement des vestiges d'autres bandes plus etroites. Ouvertüre ovale, 

 passent au blanc, a l'angle sup^rieur, et dans une large zone basale, ce qui parait 

 indiquer que le bord droit devait etre blanc. Bord columellaire tres faiblcment arqu6, 

 assez reflechi sur la fente ombilicale, d'un blanc presque nacre, sup^rieurement 

 epaissi par une callositö oblongue, faiblement relie k un autre epaisissement blanchätre» 

 döposö au fond de l'angle superieur de l'ouverture, ce qui, dans les exemplaires 

 parfaitement adultes, doit constituer une callosite unique considerable. " 



Rio Luapula, von Oapello und Jvens nur in einem etwas beschädigten Stück 

 mitgebracht, aber neuerdings von Harger am Originalfundort wieder aufgefunden. Smith 

 bemerkt ober diese Stücke: „This is the largest known species of the genus L ani- 

 st es, and is chiefly distinguished from other species by its great size. The two 

 Shells obtained by Mr. Harger diflfer somewhat in form and sculpture from the type, 

 having a shorter spire and a broader body whorl, and besides the streng Unes of 

 growth the surface in places is more or less distinct malleated. The periostracum 

 of one specimen is of the ordinary olivaceous tint common to many species, but in 

 the other example which is older it is quite black, although not a dead shell. The 

 operculum is very thin, yellowish horny beneath, and coated above with a thin dirty 

 whitish incrustation. For so large a shell it is decidedly small, und does not close 

 up the aperture until it has been drawn within fuUy two inches from the peristome." 



10. Meladomus jouberti Bourguignat. 

 Taf. 25. Fig. 1-3. 



Testa anguste perforata, magna, ventrosa, sinistrorsa, valde contorta, solida. crassa, 

 opaca, ponderosa, parum nitente, atro-castanea, saepe ad summuin erosa, grosse sti'iata, in 

 ultimo obsolete costulata. Spira breviter obtuse subconoidea (apex obtusus, depressus, quasi 

 obtritus); — anfractibus 5 convexis, regulariter ac nihilominus velociter crescentibus, sutura 

 inter superiores fere linearl, inter Ultimos profunda separatis, ultimo maximo, inliato-rotundato. 

 Apertura parum obliqua, sat lunata, subovata, superne angulata, intus rubescens; columella 

 subrectiuscula ; — peristomate recto, nihilo minus incrassato, ad marginem columellareni 

 robuste, crasso ac reflexo; marginibus callo albo validoque junctis. 



Alt. et diam. aeque 60, alt. apert. 40, lat. apert. 30 mm. 



