Occasional Papers of the Museum of Zoology 15 



C6a. Seroe Quinta (6-S; L68° 56.96', 12° 6.97'). Behind 

 Overzijde, which is the portion of Willemstad on the north- 

 west side of the harbor channel, is a ridge (37.7 metei-s) very 

 similar to the Schaarlo. 



C6h. Seroe Domi (6-T ; L68° 57.57', 12° 7.32'). This monad- 

 nock (84.8 meters) of older limestone bears about the same 

 relation to Seroe Quinta that Fort Nassau does to the Schaarlo. 



C6c. Seroe Prefoe (6-U; L68° 58.33', 12° 7.41'). Black 

 ^Mountain, the first of the Three Brothers, is slightly higher 

 (135.5 meters) than the second, Veerisberg (131.5 meters; 

 6-V). Most of the collection comes from the leeward slope 

 of the former and from the ridge of recent limestone between 

 both of them and the ocean. This locality, probably on ac- 

 count of the greater altitude of the two peaks, is considerably 

 better wooded than the ridges around 'Willemstad. It is 

 separated from Seroe Quinta by a valley in the diabase. 



Station C7. This includes the limestone from Piscadera 

 Baai to the Salinja van Sint Michiel (7-B). Two localities 

 were collected. 



C7a. Jack Evertszherg (7-Z; L68° 59.39', 12° 7.92'). The 

 lowest of the Three Brothers (115.3 meters) is quite heavily 

 wooded along Piscadera Baai and at the base of the northern 

 escarpment. ^lost of the shells obtained come from the ridge 

 of recent limestone near the ocean ; along this portion the 

 sea-cliffs are quite high. I ascended this peak on the day after 

 a heavy rain, which had cleared the atmosphere of its usual 

 haze (fig. iii-5) ; from the summit. Bonaire seemed but a 

 short distance away, while Aruba could be made out, and the 

 higher coastal peaks of Venezuela, from Santa Ana on the 

 Paraguana Peninsula to the Cumbres back of Puerto Cabello, 

 were plainly visible. 



C7h. Sint Micliielsherg (Seroe Blandan; 7-A ; L69° 0.09', 

 12° 9.24'). This peak of the older limestone is quite barren, 

 except at the base of the western escarpment, where the col- 

 lections were made. 



Station C8. Seroe Spreit (8-D; L69° 0.34', 12° 9.34'). 

 Although this peak of the older limestone, to tlie north of 



