223 



nucleus and well marked incremental lines, the outher edge bearing a slight projec- 

 tion witli fits into the angle of the peripheral keel." — 



Aufenthalt im See von Lanao auf Mindanao. — Abbildung und Beschreibung 

 nach Bartsch. 



Der Autor vergleicht diese Art mit der tertiären Vivipara vukotinovici 

 aus dem Slavonischen Neogen. Er sagt aber auch: „Occasionally there appear one 

 or more very slight spiral lirations on the surface of the spire; these, however, are 

 not constant, even on the same shell, and therefore unimportant in the specific diag- 

 nosis." Gerade diese Spiralskulptur scheint mir aber sehr wichtig, und deutet auf 

 die Zugehörigkeit zur Gruppe der Vivipara costata, zu welcher ja die nachfol- 

 gende Unterart noch ausgesprochener hinüber führt. Meiner Ansicht nach gehören 

 die sämmtlichen, von Bartsch aufgestellten neuen Vivipariden von den Philippinen 

 zum Formenkreise der Vivipara costata. — 



113. Vivipara mearnsi misamisensis Barisch. 



Taf. 45. Fig. 3. 



Testa exumbilicata, tenuis, ovato-subturrita, distincte striata, pallide olivaceo-fusca strigis 

 saturatioribus. Spira erosa. Anfractus 4 superstites liris tribus cariniformibus majoribus 

 duabusque ininoribus cincti, peripherica fortiore, interstitiis planis; anfractus ultimus ad peri- 

 pheriam valde carinatus, dein convexus, confertim spiraliter striatus. Apertura subovata, intus 

 alba, nigro limbata; labrum externum tenue, ad carinas subangulatum, cum columellari con- 

 cavo reflexiusculo callo crasso albo nigroraarginato super parietem continuo. — Bartsch angl. 

 Alt. 31,7, diam. 27,4, cum. apert. 18,5 : 14,9 mni. 



Vivipara Mearnsi misamisensis new subsp. Bartsch, in: Pr. U. St. National 

 Museum 1907 vol. 32 p, 143 t. 10 fig. 5. 



„Shell large, thin, subturreted, light olive green with many narrow dark brown 

 bands, whicli coincide with the lines of growth and probably mark resting stages. 

 Entire surface marked by rather strong incremental lines. Nuclear whorls wanting. 

 Succeeding turns inflated, shouldered at the summit and marked by three prominent 

 Spiral ridges and two less conspicuous intermediate ones, between the sutures. The 

 most strongly developed of these ridges is at the periphery , the next strong deve- 

 loped one is located about two-fifths of the distance anterior to the summit, bet- 

 ween the summit and the periphery, while the third is about halfway between these 

 two keels. Of the two weeker cords, one Stands halfway between the middle and 



