NEW LAND AND FKESH-WATEK MOLLUSKS FKOM 

 SOUTH AMEKICA 



By William B. Marshall 



Assistant Curator, Division of Mollusks, United States National Museum 



The Bulmiulus, the PlanorMs^ and the Diplodom herein described 

 are from Uruguay and were received from Dr. Florentino Felippono 

 of Montevideo. The AvipuUaria and the Anodontites are from the 

 Republic of Colombia and were received from Dr. R. H. Palmer of 

 Cartagena. One species of Odontostomus is from Uruguay and was 

 received from Prof. Auguste Teisseire of Colonia. The other species 

 of Odontostonius and the Drymaeus come from Bolivia and Ar- 

 gentina and were received from G. L. Harrington, of General 

 Ballivian, Argentina. 



BULIMULUS (BULIMULUS) FELIPPONEI, new species 



Plate 1, Figure 9 



Shell thin, slender, whorls 7I/2, apex minutely granulated, the 

 granules arranged in oblique transverse series and in obscure spirals. 

 Whorls moderately rounded, the body whorl more than half the 

 length of the shell ; sutures well impressed. Sculpture of faint longi- 

 tudinal lines of growth, the rest periods numerous and indicated by 

 minute riblets, the spiral sculpture of numerous miscroscopic striae. 

 Aperture elongate, outer lip simple, columella nearly erect, reflected 

 over and nearly closing the umbilicus. Color nearly white, the four 

 upper whorls of a rusty tint. 



The type (Cat. No. 380691, U.S.N.M.) measures : Length, 19 mm.: 

 diameter, 7 mm.; length of aperture, 6 mm.; width of aperture, 4 

 mm. It and a paratype (Cat. No. 380692, U.S.N.M.) and a third 

 specimen (Cat. No. 365729, U.S.N.M.) came from Fray Bentos, 

 Department of Rio Negro, Uruguay, and were presented by Dr. 

 Florentino Felippone. 



The species is nearest to BulimuJus krehsianus Pilsbry, of Vene- 

 zuela. It is related also to Bulirrmlus tenuissimus Lea, but is much 

 more slender. 



No. 2825— Proceedings U, S. National Museum, Vol. 77, Art. 2 



84211 — 29 



