LIST OF FIGURES IN TEXT. 



Sca-coast north of Jcquu'i da Praia, Alagoas ..... 

 Denudation of coast sediments north of Jequia da Praia 

 Characteristic topography and false bedding of coast sediments north 



of Lagoa Jequia, Alagoas ........ 



View of coast north of Jequia da Praia, Brazil. .... 



Headland on coast northeast of Jequia da Praia .... 



Characteristic topography of Jequia da Praia. .... 



Ideal section from Maceio to Albuquerque, along the Alagoas Railway 



showing coast sediment resting on crystalline rocks. 

 Exposure of bluff on beach at Barreira do Boqueirao, Brazil 

 Geological section south of Marcenerio, Brazil. 

 Section showing bluff exposure at Camaragibe, Brazil 

 Sections showing the structure, wave-cut terrace and granite boulders at 



Morro de Camaragibe, Brazil ....... 



Ideal section at Riacho Doce, Brazil, showing relations of shales and con 



glomerates to the bluffs ........ 



Channel of the Rio San Francisco, state of Alagoas, Brazil 



Section showing relation of deep well at Maceio, Brazil, to rocks of hill 



above city. .......... 



Isolelus gigas Dekay, Asaphus expansiis (Linne), Isoteloides whitfieldi Ray 



mond. ........... 



Niohe insignis Linnarsson. ........ 



Asaphellus homfrayi (Salter), Ilemigyraspis affinis (McCoy) . 

 Symphysurus sicardi (Bergeron) 

 Illccniirus quadratus Hall .... 



Basiliciis tyrannus {'SluTch.ison), Ptychopyge ar, 

 Isotelus maximus Locke .... 



Basilicus marginalis (Hall) 



Isolelus platymarginatus, I. harrisi . 



Pliomerops fischeri (Eichwald), P. canadensis (Billings), P. pseudoretictila 



tus (Portlock) .......... 



Pliomerops canadensis (Billings), P. barrandei (Billings), P. senilis (Bar 



rande) ........... 



Heliomera sol (Billings) ......... 



Raja rliina ........... 



gustifrons (Dalman). 



9 



10 



n 



12 



13 

 13 



14 



H 



20 



36 



37 

 38 

 43 

 43 

 49 

 56 

 63 

 65 



75 



76 



77 

 165 



