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 32. Pupa (Sphyradium) Bielzi Rossm. Miedzi scieny bei J. 



M. 



Neue Steiiomphalus - Form (Rapaniiiae) aus dem 

 Mainzer Becken. 



Von 



Dr. 0. Boettger. 

 Stenomphalus Heusleri nov. form. 

 Char. T. maxime äff. var. cristatae Bttg. Sten. cancellati 

 Tho., sed latius perforata, magis fusiformi-ventriosa, 

 cauda longiore, superne minus constricta, sutura multo 

 magis impressa discrepans. Anfr, prope suturam hori- 

 zontales , planae vel fere concavae , superiores valide 

 spiraliter bicristati, costula spirali tertia mediana minore 

 Don intercalata , ultimus tricristatus , cristae altae, la- 

 tissimae, convexae, spiraliter sexstriatae, sulcis profun- 

 dissime excavatis, angustioribus quam cristae, verti- 

 caliter arcuatim plicatulis, versus aperturam solum 



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