OF THE SERGTPE-ALAcAaS HASIN OF BRAZIL. 387 



small collection ot" the fossils of the neighborhood was made at one time by J)r. Dio- 

 nizio Eleutcrio do Menescs, the proprietor of Engenho Moleque near the village. At 

 this eng-enho is an exposure of soft sandstone, but the fossils in it aie nt)t well pre- 

 served or readily e.xtractcd. The rocks in the \ icinity of Riaehuello were not exam- 

 ined thoroughly, and im doiil)! more interesting localities than an}' found remain to 

 be explored here. Between the village and the engenho Jesus Maria Jose are several 

 localities which yield good fossils. At the last-named place an exposure in the public 

 road furnishes an abundance of them. Another locality is the Engenho Sao Jose de 

 Vieira, and between it and Sao Felix are the largest and best preserved gastero[)ods 

 found anywhere in the Sei-gipe-Alagoas basin, many of them lying weathered in the 

 lields. A few of these were collected, but they seem to have been lost, for they were 

 not included in the collection sent Dr. White with the other mesozoic material from 

 Brazil to be described. At Sao Felix is the only exposure between the Sito Jose de 

 Vieira locality and KiachuoUo. 



At Trapiehc Santa Maria in the outskirts of this village and on the river l)ank, a 

 soft, non-fossiliferous sandstone is exposed, having a low dip to the north 15^ east. 

 This rock, in general appearance, very strongly resembles that exposed at Araga, and 

 Pamonha. At Trapiche das Pedras many large gastcropods were found in a calcare- 

 ous sandstone on the east side of the river. 



About two hundred yards up the river from Trapiche Maior is a ledge of soft 

 sandstone exposed at the margin of the stream near a tile flictory, and containing 

 many fossils, and especially bivalves. At Porto dos Barcos an exposure at the mar- 

 gin of the river, and which is uncovered at low tide, dips N. 20° E. The rocks at 

 all the above localities dip beneath the oolitic limestones of the Urubu and Iiubiia 

 blufls. 



I liiid in my field notes, written upon the si)ot, a statement to this effect: That 

 "the Coqueiro beds are the same as those of Trapiche ^faior, Porto dos Barcos, and 

 Ti-apiche das Pedras." The importance of these facts will be made apparent in the 

 discussion of the Jurassic aspect of some of these beds. My notes u])on the detailed 

 geology of those localities (Porto dos Barcos, Trapiche das Pedras, and Tia|)iche 

 Maior) are meagre, the collecting at these places having been done principally by 

 Dr. Freitas. 



Urubii and Imhira. 



The locality known as Urubu is a bold clilV of oolitic limestone of grayish and 

 greenish gray color, from one hundred to two hundred feet high, having a X.-S. 

 trend, and dijiping appi-oximatdy '-M , S. KT E. Along the weatheretl face of this 



