162 MOLLUSCA OF THE DUTCH BORNEO-EXPEDITION. 



recognizable by this character, which makes the inferior 

 part of the posterior margin obtusely rostrate. 



42. Pseudodon aeneolus Drouet & Chaper. 



Drouet & Chaper, Mem. Soc. Zool. de France, 1892, 

 p. 192; pi. 6, figs. 4—7. 



Locality: Small brook near Singangi in the Ketoengau 

 District (Moret). 



One specimen, agreeing in shape and size with fig. 7 

 of Drouet , in sculpture with fig. 4 , very slight wrinkles 

 being present; this character is, as already stated by the 

 author, very variable in this species. 



B. Marine Mollusks. 



A few marine shells were collected by Dr. Hallier, on the 



shore near Sambas and on Poeloe Lemoekoetan; as they all 



belong to common species, I only give the names ; those which 



are also from the 2n<l locality are marked with an asterisc. 



1. Pentadactylus musivus Kiener. 



2. Cypraea errones Linné. 



3. )) erosa Linné. 



4. Cerithium tuberculatum Linné , var. variegatum Quoy 



& Gaimard. 

 *5. Cerithium morus Lamarck, var. moniliferum Dufresne. 



6. » (Vertagus) asperum Linné, var. lineatum 

 Bruguière. 



7. Planaxis sulcatus Born. 



8. Nerita striata Burrow. 

 *9. » chamaeleo Linné. 



*10. » squamulata Le Guillou. 

 *11. » alhicilla Linné. 



12. Trochus maculatus Linné. 



13. Monodonta labio Linné. 



14. Turbo ticaonicus Reeve. 



15. Littorina scabra Linné , var. ; only from Poeloe 



Lemoekoetan. 



Rhoon, near Rotterdam, November 1895. 



T>Jotes from the Leyden IMuseum, "Vol. XVII. 



