Occasional Papers of the Museum of Zoology 25 



along the southwestern shore of Aruba, north of Spaansch 

 Lagoen, form gently sloping plains, which are almost com- 

 pletely utilized as aloe plantations. However, a narrow strip 

 along the top of the low shore cliffs (1 to 2 meters) is too 

 jagged and broken by crevices to permit easy cultivation, and 

 remains in quite primitive condition. A few distorted divi- 

 divi trees and acacias break the monotony of Opuntia and 

 dwarfed Jatropha urens, which does not hide the barren 

 rocks (fig. v-12). 



Subfossil shells of the recent species are quite common in 

 the aloe fields, along with Oxystyla niaracaihensis imitator, 

 which was not found alive. Living shells are mainly limited 

 to these uncultivated spots, although a few occur within the 

 limits of the aloe plantings and even on the pungent, yucca- 

 like leaves. 



A5a. Near Perkietenhoseh (0 ; L70° 0.54' 12° 29.28'). Just 

 north of Perkietenhoseh, this shore strip is scattered with 

 willow brush and small thorn trees. 



Aoh. Southeast of Oranjestad (P; L70° 2.04', 12° 30.52'). 

 The more barren portions along the top of the shore cliffs 

 necessitate a great deal of work for the net results in shells 

 collected. Only a few of the large, flat rocks have any shell 

 population on their lower sides, and this mainly consists of 

 pupillids. 



Station A6. Limestone remnant, near Tanki Schipau (S; 

 L70° 2.0', 12° 31.88'). A few shells were collected around this 

 little mass of the older limestone rocks, in the aloe fields near 

 the inner edge of the limestone area. 



Station A7.^^ This includes three localities near the north- 

 ern end of the island, which is even more arid and barren than 

 Seroe Boca (CIO) on Curasao. 



A7a. Shore near Malmok (V; L70° 3.33', 12° 35.93'). In 

 this place, narrow strips of recent limestone alternate with 

 low, brush-covered dunes. 



A7h. Seroe Annuloei (W; L70° 2.64', 12° 36.15'). The 



25 Compare Boldiugh, p. 100; "The Hills in the N. W. part." 



