14 University of Michigan 



(25.1 meters) just north of the old fort near the Quarantme 

 Station, is the type locality of Tudora megacheilos kahrietensis. 



Station C4. Seroe Mansinga (4-H; L68° 53.22', 12° 4.81'). 

 The older limestone remnants between Caracas Baai (3-G) 

 and Lagoen Jan Tiel (4^1) reach an altitude of 49.2 meters. 

 The brush on the hills themselves is rather dwarfed, but larger 

 trees are quite numerous on the northern slopes, just inside of 

 the limestone ramparts. In these places, Drymaeus virgulatus 

 is especially numerous and occurs even on the lower crotons. 



Station Co. The limestone rim between Lagoen Jan Tiel and 

 Sint Anna Baai (5-P) is included in this station. The fol- 

 lowing substations represent the main localities collected. 



C5a. Seroe Spanjo (5-K; L68° 54.21', 12° 5.11'). Very 

 similar to the preceding, but most of the collection comes 

 from the more recent limestone. 



€51). Seroe Salinja Ahau (5-L; L68° 55.38', 12° 6.31'). 

 Practically a continuation of the Schaarlo. 



Coc. Schaarlo (5-M; L68° 56.55' 12° 6.81'). Back of Wil- 

 lemstad (5-0) is a low ridge (41 meters) of recent limestone. 

 It is rather barren, although cjuite densely covered with 

 Croton flavens, etc. Along the northern side, acacias and 

 other small thorn trees are more abundant (fig. iii-7). As 

 Willemstad is the principal port of the islands, it is probable 

 that most of the species described from Curasao by the earlier 

 writers came from its near vicinity ; and I am regarding the 

 Schaarlo as the type locality of all of them that occur there. 



Cod. Fort Nassau (5-N; L68° 56.41', 12° 7.03'). The old 

 fort crowns the summit (68.3 meters) of a triangular monad- 

 nock of the older limestone, which is separated from tlie 

 Schaarlo by a small valley. Most of the shells collected come 

 from the base of the eastern end of the escarpment, where the 

 vegetation is slightly more luxuriant than on the Schaarlo. 



Station C6. This includes the limestone ramparts from Sint 

 Anna Baai to Piscadera Baai (5-W). The two main peaks 

 of the older limestone, Seroe Pretoe and Veerisberg, together 

 with Jack Evertszberg, are known as tlie "Three Brothers" 

 (fig. iii-5). Three substations are recognized. 



