214 Gesellschaft natur forschender Freunde, Berlin. 



9. Melania Ovulum. 



Testa globoso-ovata, decollata, inaequaliter striatula 

 vel le viter et distanter costulata. striis spiralibus obtusis 

 subelevatis perlevibus sculpta, opaca brunneo- virescens, 

 interdum fasciis paruru distinctis nigris picta; sutura modice 

 impressa; anfr. superstites 2 — 3, ultimus plerumque vari- 

 cibus nonnullis nigris notatus. basi laevis; apertura 2 /s longi- 

 tudinis testae decollatae occupans, paulum obliqua, margine 

 externo tenui, nigrolimbato, superne non sinuato, basali et 

 columellari recedentibus, incrassatis, albis, fauce pallide 

 caerulea, saepius fusco-maculata. 



Long. 19, diam. 13; apert. long. 13, lat. 9 mm. 



Ikujang bei Thosan, Korea, Dr. Gottsche. 



Stellt sich zunächst neben M. gldbus (Sitzungsberichte 

 d. Gesellsch. naturf. Freunde, 1886, S. 79). 



10. Unio acrorrhynclius. 



Testa elongata, compressa, periostraco subsericeo nigro- 

 fusco, nitidulo, antice bre viter rotundata, postice partim 

 tuberculis subperpendicularibus elongatis inter se parallelis 

 sculpta et in rostrum longum acutum superne carina ele- 

 vata leviter descendente et usque in apicem excurrente 

 munitum producta; umbones depressi, excoriati. Facies 

 interna pallide rubescente-margaritacea vel flavorubens, 

 posterius tuberculis externis leviter notata. Dentes car- 

 dinales valvae sinistrae duo trigoni subaequales rugosi, 

 anterior antrorsum porrectus, valvae dextrae anterior parvus, 

 compressus, margini dorsali subparallelus; posterior late 

 trigonus, rugosus; dentes laterales elongati. rectilinei, v. 

 sinistrae duo, leviter ruguloso-asperi, v. dextrae unicus, 

 leviter transverse sulculosus. Impressio muscularis antica 

 magna, rotunda, margini antico pervicina, linea palliaris 

 antice latiuscula, foveolata, dein simplex. 



Long. 1272, alt. 34, diameter sub verticibus 15, rostri 

 usque ad 20 mm. Vertices in 7 6 longitudines siti, liga- 

 mentum usque ad 4 /e longitudinis extensum. 



Fluss Naemigang bei Hatanggyöng und in einem Zu- 

 fluss des Imj ingang, Korea, Dr. Gottsche, dort mit mehr 



