146 MOLLUSCA OF THE 



A. La.nd- and Freshwater Mollusks. 

 1. Vaginula Hasselti Martens. 



Martens , Preuss. Exped. uach Ost-Asien , Landschne- 

 eken, p. 176; pi. 5, fig. 4 (and 2). 



Localities: Foot of Mount Kenepai, December 1893 

 (Büttikofer). — Poetoes Sibau and Poelau on the Sibau 

 river, June 1894 (Büttikofer). 



From each of the first-named localities one rather large 

 specimen, from the third one four specimens. 



2. Vaginula Wallacei Issel. 



Issel , Molluschi Borneensi , in : Ann. del Mus. Civ. di 

 Stor. Nat. di Genova, vol. VI, 1874, p. 385; pi. 4, figs. 1 — 3. 



Localities: Smitau , December 1893 (Büttikofer). — Sin- 

 tang (Büttikofer). 



With this species I have identified a few specimens, 

 slightly differing from each other in colour, but agreeing 

 in other respects with the description of Issel , who had 

 only one specimen for examination. Some specimens are 

 more densely covered with the black spots than others; 

 these spots are sometimes entirely absent on the underside 

 of the mantle. A somewhat lighter zone on the median 

 line exists in a few specimens , but not so clear as in 

 the former species. The female generative aperture is 

 situated on the posterior half of the body, while in V. 

 Hasselti it lays in the anterior part. In the figure given 

 by Issel the buccal mass is partly extruded, which often 

 occurs in drowning the animals. 



3. Parmarion Goedhuisi, n. sp. 

 (Plate 2, fig. 1). 



Reddish grey, with more or less blackish shades on the 

 neck, the upper part of the head, of the mantle and of 

 the hindermost part of the body, where the black is con- 

 centrated near the sharp, grey keel, and divided into two 

 black streaks under the intestinal pouch. The sides of the 



Notes from tlie Ley den IMuseuzn, "Vol. XVII. 



