Occasional Papers of the Museum of Zoology 27 



Curasao or Aruba. On the whole, Bonaire is better wooded 

 than are the other two main islands, but the northern hills do 

 not attain the altitude or the richness of those on Curasao, 

 xjike Aruba, this island has a more homogeneous mollusean 

 fauna than is the case with Curagao. 



Station Bl. South of Kralendijk (B; L68° 16.68', 12° 

 8.08')." The southern shore of Bonaire exposes extensive 

 stretches of bare, recent limestone rock (fig. vi-15). Numer- 

 ous sink-holes show the presence of fresh and brackish water 

 a short distance below the surface ; as a result, the vegetation 

 is fresh and verdant, wherever it is sufficiently protected from 

 the dry winds (fig. vi-16). Most of the shells come from along 

 the highway near the western shore. 



Station B2. Shore near Hato (F; L68° 17.51', 12° 11.49'). 

 As Kralendijk is the principal port of the island, the material 

 from which the earlier species were described probably came 

 from the near vicinity. Everything points to the fact that 

 Hartert only collected near the town itself, as he obtained 

 Potamopyrgus, which occurs in a well in the town, and the 

 small species that live in the more arid situations, but missed 

 those from the hills. Neosuhulina harterti is the only one of 

 his species that I did not find near town, and it doubtlessly 

 occurs around some of the buildings. However, it seems pe- 

 culiar that he should have missed Cerion uva, which is abun- 

 dant everywhere. Either this station or the preceding one is 

 quite representative of the conditions around Kralendijk. The 

 present station, along the top of the low shore cliffs north of 

 the town, is somewhat richer than Bl. 



Station B3. Eastern portion of Montagne. Scroe Largoe 

 or Montagne (L) is the main portion of the limestone which 

 covers the western side and summit (133.4 meters) of the 

 southern portion of the principal anticline. 



B3a. Southeastern escarpment (G; L68° 16.31', 12° 11.76'). 

 The southeastern edge of Seroe Largoe, south of Kibra di Mon- 

 tagne, forms a rather prominent escarpment of the older lime- 



27 Compare Boldingh, p. 161; "The country around Kralendijk." 



