190 E. W. Berry — Carboniferous Plants from Peru. 



spent in putting, down concrete-lined shafts and in dia- 

 mond drilling, although the complete section is admirably 

 exposed along the south shore of the peninsula. Pros- 

 pecting has not resulted in economic development, since 

 the coal seams are thin and the coal contains a prohibitive 

 percentage of ash. 



Subsequently Fuchs gave a brief account of the geology 

 of this general region in his paper on the copper deposits 

 around lea and Nazca. 5 In this report he considers that 

 the Carboniferous at Paracas is continuous to the east- 

 ward beneath the Pleistocene and recent deposits that 

 form most of the surface of the country in the belt lying 

 between the igneous rocks of the Western Range of the 

 Andes and the present coast, i. e. the Pampa de Condor, 

 Pampa de Chunchanga, Pampa de Pisco and Tablazo de 

 lea. Another account of the Paracas Carboniferous with- 

 out, however, adding anything to our knowledge concern- 

 ing it, was published by Dorca in 1909. 4 



Steinmann, who did not visit Paracas, saw Fuchs 's col- 

 lection at the Cuerpo de Ingenieros de Minas in Lima. In 

 a short note published in 1910 he makes the interesting 

 generalization that the plant-bearing Carboniferous in 

 South America is Lower and the invertebrate-bearing 

 Carboniferous is Upper in age. 5 He states, with his usual 

 assurance, that the Paracas forms represent : 



Archaeocalamites radiatus. 

 Lepidodendron cf. Veltheimi. 

 Lepidodendron cf. Volkmanni. 

 Sphenopteris affinis = S. furcata. 

 Ehodea filifera. 

 Ehabdocarpus. 



None of these forms is represented in the large collec- 

 tions which I made at Paracas, nor did I see any of them 

 in the Fuchs collection. 



Finally in 1917 in Lisson's admirable compilation of 

 Peruvian fossils 6 the two species Lepidodendron rimosum 

 and Lepidodendron obovatum are listed from Paracas, 

 the determinations being by the late Professor Zeiller, 



3 Fuchs, F. G., La Begion Cuprifera de los Alrededores de lea y Nazca; 

 Cuerpo de Ingenieros de Minas, Bol. 29, Lima, 1905. 



4 Dorca, I. E., Estudio sobre los Yacimientos Carbonif eros de Paracas, 

 Bol. Soc. Ingenieros, vol. 11, pp. 104-130, Lima, 1909. 



5 Geol. Bundschau, Bd. 1, p. 50, 1910. 



6 Lisson, C. I., Edad de los Fosiles Peruanos y Distribucion de sus 

 Depositos en Toda la Eepublica, pp. 20-21, Lima, 1917. 



