358 



Schale undurclibolirt, gedrückt kugelig, ziemlich dünnschalig, schräg gestreift, 

 wenig glänzend, dunkelbraun mit breiten Binden, einer schwarzen in der Mitte, einer 

 gelblichen und einiger hydrophanen. Gewinde wenig erhaben, Apex stumpf, 4 leicht 

 gewölbte, rasch zunehmende Windungen, die letzte vorn kaum herabsteigend, aufgeblasen, 

 schräg gefaltet, dazwischen gehämmert. Spindel schräg, zusammengedrückt, verbreitert, 

 weiss. Mündung schief, gestutzt eiförmig, innen weisslich oder schmutzig bläulich mit 

 durchscheinender Mittelbinde ; Mundsaum dünn, weisslich, stark ausgebreitet und etwas 

 zurückgeschlagen. 



Abbildung naeli den Novitates. 



Obbina wovcesteri Bartsch. 



Shell lenticular, marked by decidedly retractive lines of growth and very fine, 

 closely spaced spiral striations, excepting the first whorl (the nucleus), which is 

 smooth. The followiug whorl is light horn-yellow; the succeeding turn gradually 

 darkens to chocolate brown. On the third whorl three spiral bands of chocolate 

 brown become apparent, which eventually cover more of the space between 

 the sutures and the periphery than the buff flushed areas that separate them, 

 The middle ones of these three bands is the darkest and widest and occupies 

 the middle of the Avhorls between the sutures. The posterior band is separated 

 from the summit by a very narrow liglit zone: the Spaces separating the 

 median from the anterior and posterior bands are of equal width and as wide 

 as the median dark zone. Periphery strongly keeled. Base modei'ately broadly 

 umbilicated; marked by two brown bands, the first of which, the narrower, is 

 separated from the periphery by a very narrow light line; the second, which 

 equals the median band of the spire in width, is a little farther anterior to the 

 other band than its own width. The light zone separating these two bands 

 and the rest of the base, yellow with a greenish flush. Aperture suboval, 

 somewhat angulated at the junction of the supei'ior and basal lip; the angle 

 corresponding to the peripherial keel; peristome thickened and reflected, basal 

 lip without tooth ; parietal wall provided with a thick cord which joins the 

 outer and basal ups and practically renders the peristome complete. The 

 peristome is white, excepting at the peripheral angle where the brown band 

 continues over it. ■ — Anfr. 4V2. 



Alt. 9,5—10,5, diam. maj. 20—23, min. 17— 19 mm. 



