58 MK. J. A. DOUGLAS OK GEOLOGICAL SECTIONS [vol. lxxvi, 



V. Bibliography. 



This list is a continuation of and supplementary to one published 

 in a former paper of this series (No. 35 infra), to which reference 

 may be made for further works dealing with the Geology of Peru 

 and Bolivia. 



(30) 1885. P. H. Hatch. — ' Ueber die Gesteine der Vulkangruppe von Arequipa ' 



Tsclierm. Min. Petrog. Mitth. vol. vii, pp. 308-60. 



(31) 1914. Erich Jaworski. — ' Beitrage zur Kenntnis der Jura in Siid-Amerika ' 



Neues Jahrb. Beilageband xxxvii, pp. 285-342. 



(32) 1909. V. F. Marsters. — ' Informe sobre la Costa Sur del Peru' Boletin del 



Cuerpo de Ingenieros de Minas del Peru, No. 70. 



(33) 1909. Isaiah Bowman. — 'The Physiography of the Central Andes' Am. 



Journ. Sci. ser. 4, vol. xxviii, pp. 197-217 & 373-402. 



(34) 1913. Carlos I. Lissox. — ' Edad de los Fosiles Peruanos & Distribution de 



sus Depositos en la Republica ' Mapa Paleontologico del Peru, Lima. 



(35) 1914. J.A.Douglas. — 'Geological Sections through the Andes of Peru & 



Bolivia : I — From the Coast at Arica in the North of Chile to La Paz 

 & the Bolivian Yungas ' Q. J. G. S. vol. Ixx, pp. 1-53. 



(36) 1914. Hermann L. F. Meier. — ' Carbont'aunen aus Bolivia & Peru' Neues 



Jahrb. Beilageband xxxvii, pp. 590-651. 



(37) 1916. H. F. Gregory. — ' A Geological Reconnaissance of the Cuzco Valley, 



Peru ' Am. Journ. Sci. ser. 4, vol. xli, pp. 1-100. 



EXPLANATION OF PLATES I-VL 

 Plate I. 



Fig. 1. Conularia africana Sharpe, Lower Devonian; Taya Taya (Peru). 

 Natural size. (See p. 37.) 



2. Conularia baini Ulrich, Lower Devonian; Taya Taya (Peru). Natural 



size. (See p. 37.) 



3. Conularia quichua LTlrich, Lower Devonian; Taya Taya (Peru). 



Natural size. (See p. 37.) 



4a. Cyathaxonia sp., Carboniferous Limestone; Viscachani(Peru). Trans- 

 verse section of adult stage, showing' solid central axis, and 

 regular disposition of septa. Natural size. (See p. 46.) 



4 b. Transverse section of adolescent stage, showing breaking-up of 

 septal ring (cf. Carcinophyllum simplex Garwood). Natural size. 

 (See p. 46.) 



5. Zaphrentis aff. eruca (M'Coy), Carboniferous Limestone; Viscachani 

 (Peru). Transverse section, showing Lophophylloid type of colu- 

 mella formed by the lateral thickening of the counter-septum, and 

 the regularity of the tabular intersections. Natural size. (See 

 p. 45.) 



6 a. Zaphrentis aff. enniskilleni Edwards & Haime, Carboniferous Lime- 



stone ; Viscachani (Peru). Transverse section, adult stage, near 

 the floor of the calyx, showing the expansion of the cardinal fossula, 

 and thin major septa with curvature convex to the fossula. 

 Natural size. (See p. 46.) 



66. Transverse section, adolescent stage, showing expansion of thenarrow 

 fossula near the wall, and thickened septa. Natural size. (See 

 p. 46.) 



la. Lophophylloid Caninia, Carboniferous Limestone ; Viscachani (Peru). 

 Transverse section, adult stage, near the floor of the calyx, 

 showing the Amplexoid character of the septa, and the extension 

 of the counter- septum. Natural size. (See p. 45.) 



7 b. Transverse section of another specimen, adolescent stage. Natural 



size. 



