286 BULLETIN OF THE ZOOLOGICAL MUSEUM. 



states that Professor Raimondi of Lima has traced Carboniferous 

 series at a height of 14,000 feet, on the Apurimac, at a locality 

 intermediate between the Pichis River and the Cuzco Valley. I shall 

 return to the general structure of the shores of Lake Titicaca in 

 a subsequent notice, but -would only call attention to the fact that 

 Forbes and d'Orbigny assign the rocks along the east shore of the 

 lake to the Devonian. I have been unable to find fossils at any of 

 the localities where I landed, — Vilquechico, Moho, Conima, Carabuco, 

 — and can only state that the rocks (dipping to eastward or west- 

 ward) are not, except occasionally, the colored sandstones and shales 

 separated by metamorphic rocks, so characteristic of the Carbonifer- 

 ous series of the west shore of the lake and the territory beyond. 



