GEOLOGY OF PERU—ADAMS. 403 
upper Cretaceous represented. He says, in summing up concerning 
the lower Cretaceous, that in Peru the only highest part of the lower 
Cretaceous (the Albien) is certainly known and the Neocomian prob- 
ably may be present. 
In various bulletins? of the Corps of Engineers of Mines of Peru 
J. J. Bravo has published (1904-1906) determinations of Cretaceous 
fossils and has described some species. This is the most important 
work done in paleontology by a Peruvian. Through his efforts the 
corps is gradually acquiring a collection of fossils and developing a 
paleontologic literature. Bravo has called attention 'to the fact that 
previously Pflucker y Rico had collected fossils and given a relation ° 
of localities and a list of fossils obtained in the districts of Yauli 
(Morococha), but the collections were lost. He also cites two species 
of Pseudo-ceratites from Yauli, described by Hyatt.¢ 
In 1904 Habich, in his report on the coal deposits of Checras, in the 
Province of Chancay,’ mentions the finding of Cretaceous fossils in 
limestones and plants in the coal-bearing beds. 
Similarly Malaga Santolalla (1904) found fossils in Hualgayoc ¢ 
and concluded that the middle or upper part of the Cretaceous is 
represented there. He also gives‘ a list of fossils from the Province 
of Cajamarca described by various authors. 
Tn his report on the Province of Colendin 9 he likewise gives a list 
of Cretaceous fossils. Lisson (1905) collected a few fossils from near 
Chorullos, just south of Lima, and described” some Annelid tubes, 
and a new species Sonnerata Pfluckert and redescribes S. Raimondi- 
anus Gabb. 
In the winter of 19034 Steinmann made some collections in the 
Cordillera east of Lima and from the Island San Lorenzo in front of 
Callao. This material was studied by Neumann, who also included 
some fossils in the Hamburg Museum, from Lucha, and the quebrada 
of Huallauca, in the Province of Ancachs. In his report (1907) he 
says that up to this time the Cretaceous was very incompletely 
known and that according to his knowledge no lower Cretaceous had 
been found. The fossil plants from San Lorenzo, studied by Neu- 
@ Bulletins Nos. 10, 19, 21, 25, 35, 51, dealing with the Provinces of Cajatambo, 
Cajabamba, Pataz, the district of Morococha, the Provinces of Jauja and Huan- 
cayo, and the Province of Huamachuco, respectively. 
’ Apuntes sobre el distrito mineral de Yauli, Annales de Const. Civiles y de 
Minas del Peru, Tome III, 1883. 
¢ Pgeudo-ceratites of the Cretaceous, U. S. Geol. Survey Monograph XLIV, 1908. 
4 Bol. de Cuerpo de Ing. de Minas del Peru No. 18, E. A. V. de Habich. 
€ Bol. No. 6. 
f Bol. No. 31. 
9 Bol. No. 82. 
h Bol. No. 17, Los Tigillites del Salto del Fraile y algunos Sonneratia del 
Morro Solar. Carlos I. Lisson. 
