24 University of Michigan 



A2h. Spur of Seroe Pretoe (E; L69° 54.35', 12° 26.74'). 

 This plateau (altitude about 50 meters), between Roois 

 Hundoe and Spoki, is southeast of the main summit of this 

 limestone hill. The larger trees are especially common here; 

 most of the shells come from around the bases of Guaiacum 

 and Bursera trees. 



A2c. Baranca Alto and Isla (F and G; L69° 57.77', 12° 

 28.50' and 69° 57.45', 12° 28.28', respectively ).2^ The Isla is 

 a rather high, limestone mesa (72.5 meters), which is almost 

 completely surrounded by canyon-like roois. Baranca Alto 

 (about 50 meters) is the crest at the inner edge of the coral 

 formation, along Rooi Taki (K). Both of these localities have 

 patches of brush and larger trees, but are considerably more 

 barren than the southern substations. 



Station A3. Rooi Frances (L; L69° 58.73', 12° 29.09'). 

 This lot was obtained from a ledge at the base of the escarp- 

 ment of older limestone, on the western side of this rather 

 barren canyon. 



Station A4. Seroe CanasJiito (N). This quadrangular, 

 limestone remnant (70 meters) is the only place, north of Rooi 

 Frances, where the older limestone develops high, precipitous 

 escarpments (fig. iv-8). 



A4a. Base of northern escarpment (L70° 0.05', 12° 30.50'). 

 The inner edges of Seroe Canashito are broken off abruptly as 

 high, vertical or overhanging cliffs, which surmount the steep 

 slopes of the underlying, older rocks. These cliffs contain 

 small caves which are decorated with aboriginal picture- 

 writing. Most of the specimens come from the talus at the 

 base of the northern escarpment. 



A4h. Top of Seroe~ Canashito (L70° 0.07', 12° 30.44'). 

 The sloping top of this mesa is typically eroded into jagged 

 points and honeycombed with irregular holes. ]\Iost of the 

 vegetation is dwarfed and distorted by the wind. 



Station A5.^* The exposures of recent, chalky limestone 



23 Compare Boldingh, p. 159; "The calcareous table-lands near 

 Belashi. ' ' 



24 Compare Boldingh, p. 159 ; ' ' The country near Manshobo. ' ' 



