NOTES ON THE PHILIPPINE POND SNAILS OF THE GENUS 

 VIVIPARA, WITH DESCRIPTIONS OF NEW SPECIES. 



By Paul Bartsch, 



Assistant Curator, Division of Mollushs, U. S. National Museum. 



During the recent expedition of the LT. S. Bureau of Fisheries 

 steamer Albatross to the PhiHppine Islands every opportunity was 

 used to make extensive collections of fresh-water as well as land and 

 marine shells. Among the fresh-water forms VivijJara proved espe- 

 cially interesting, particularly those of Lake Lanao, Mindanao, where 

 we secured no less than 6 gallons of living shells. It was from this 

 lake that I described Vivipara lanaonis Bartsch,*^ with forms alpha 

 to lambda, of which I now figure a fully adult shell, pi. 34, fig. 1. The 

 greater part of the material collected by me in Lanao falls under this 

 species and will form the basis of a special report to be published 

 later. 



We were unable to find Vivipara polyzonata Frauenfeld anywhere 

 in the Philippines, which makes it appear as if the species did not 

 occur in the islands. 



VIVIPARA BULUANENSIS SOLANA, new subspecies. 

 Plate 34, fig. 2. 



Shell similar to T^ buluanensis proper, but more depressed, with 

 much less inflated whorls and much narrower umbilicus; base less 

 rounded, with a well-marked angle at edge of the umbilicus; in V. 

 buluanensis this is well rounded. 



The type and another specimen (Cat. No. 207777, U.S.N.M.) 

 comes from Rio Similao, Mindanao. They were donated to the U. S. 

 National Museum by Father Sola, the director of the Museo Ateneo, 

 Manila, for whom it is named. The type has six whorls and meas- 

 ures: Length, 30 mm.; diameter, 23 mm. Four additional speci- 

 mens (Cat. No. 207778, U.S.N.M.), also from the Museo Ateneo, were 

 collected at Rio Talisayan, Mindanao. Considerable more material 

 from both of these localities is in the Museo Ateneo. 



« Proc. U. S. Nat. Mus., vol. 32, 1907, pp. 145-147, figs. 1-10. 



Proceedings U. S. National Museum, Vol. 37— No. 1 709. 



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