228 



117. Vivipara zamboangensis Bartsch. 



Taf. 45. Fig. 10—13. 



Testa anguste umbilicata, conica, tenuis, saturate olivaceo- viridis ; apex laevis, anfrac- 

 tibus 1^2 convexis. Antractus sequentes leviter inflati, carinis tribus subaequidistantibus, 

 infera majore suturali, cincti, inter carinas fere plan! et lineolis spiralibus subundulatis nu- 

 merosis cincti; ultimus antice descendens, infra carinam periphericam lineis subtilibiis spira- 

 libus tantum sculptus, carinis nuilis. Apertura parva, subcircularis, supra leviter angulata, 

 faucibus coeruleo-albidis ; peristoma nigrum, continuum, acutum, margine externo ad carinas 

 leviter angulato, columellari tenui, valde arcuato, leviter super perforationem rimaeformem 

 reflexo; callo parietali crasso. — Operculum ruto-fuscum, lineis incrementi numerosis, nucleo 

 excentrico, depresso. — Bartsch angl. 



Alt 25,9, diam. 20,2, diam. apert. 13,1 : 11,5 mm. 



Vivipara zamboangensis Bartsch, in: Proc. U. St. Nat. Museum vol. 32 

 no. 1518 p. 137 t. 11 fig. 19. 



„Shell conic, thin, dark olive green. Nepionic whorls 1^/, well rounded, smooth. 

 Succeeding turns somewhat inflated, marked between the sutures by three spiral 

 keels, of which the basal one, which is a little stronger than the other two, marks 

 the periphery. The two post-peripheral keels divide the späce between the summit 

 and the periphery of the whorls into three equal, almost flattened areas, which are 

 marked by many very fine and somewhat wavy spiral lines, that lend the surface 

 a silky luster. The summit of the whorls falls immediately below the peripheral 

 keel in all but in the last turn ; in this it is deflected toward the base and a nar- 

 row band becomes apparent between it and the peripheral keel. Base rather short, 

 well arched, narrowly umbilicated, marked by numerous fine, wavy, spiral striations 

 as on the spire. Aperture small, subcircular, black edged, bluish white within; 

 outer hp thin, faintly angled at the keels, columella thin, strongly concave and so- 

 mewhat reflected over the slitlike umbilicus, parietal wall covered with a thick cal- 

 lus, which renders the peristome practically continuous." — Bartsch. 



Aufenthalt bei Zamboanga auf Mindanao. Abbildung und Beschreibung nach 

 Bartsch. 



Weder Möllendorff noch Jagor haben diese anscheinend für einen Teil von Min- 

 danao charakteristische Form erhalten. Sie scheint ebenso zu variiren, wie die an- 

 deren Lokalformen der V. costata. 



