Reviews — Palceontologia Inclica. 173 



Canada ; " whilst others are of interest to geologists generally. We 

 regret that space does not permit us to mention more than the titles 

 of the Bulletins of this latter description ; it may suffice to state 

 that their respective authors are all well- recognized authorities on 

 the subjects of which they write. The following are on paheonto- 

 logical matters : — " On Mesozoic Fossils," by Dr. C. A. White, who 

 also contributes papers " On the Mesozoic and Cenozoic Paleontology 

 of California," and " On Marine Eocene, Freshwater Miocene, and 

 other Fossil Mollusca of Western North America." " On the Fossil 

 Faunas of the Upper Devonian along the Meridian of 76° 30'," by 

 Prof. H. S. Williams. " On the Cambrian Faunas of North America," 

 by C. D. Walcott. " On the Quaternary and Recent Mollusca of the 

 Great Basin," by R. E. Call ; and " On the higher Devonian Faunas 

 of Ontario County, New York," by J. M. Clarke. 



The following treat of petrological and mineralogical subjects : — 

 " On Hypersthene-Andesite and on Triclinic Pyroxene in Augitic 

 Rocks," by Whitman Cross, with a geological sketch of Buffalo 

 Peaks, Colorado, by S. F. Emmons ; " On Secondary Enlargements 

 of Mineral Fragments in certain Rocks," by R. D. Irving and C. R. 

 Vanhise ; " A Crystallographic Study of the Thinolite of Lake 

 Lahontan," by E. S. Dana ; and " On the Development of Crystal- 

 lization, etc.," by Arnold Hague and J. P. Iddings. 



Besides the above, Mr. George F. Becker contributes " Notes on 

 the Stratigraphy of California," and MM. Jules Marcou and J. B. 

 Marcou, " A Catalogue of Geological Maps of America (North and 

 South) 1752-1881." 



These Bulletins, in all cases where the subject-matter requires 

 illustration, are furnished with well-executed plates, in one instance 

 these are beautifully coloured. Further, these papers will not be less 

 appreciated on account of the fact that they are published at such 

 moderate prices as to bring them within the means of all geologists. 



G. J. H. 



II. — Memoirs of the Geological Survey of India. Pal^ionto- 

 logia Indica. Ser. X. Indian Tertiary and Post-Tertiary 

 Vertebrata, Vol. III. Parts 7 and 8. Siwalik Crocodilia, 

 Lacertilia and Ophidia ; and Tertiary Fishes. By Richard 

 Lydekker, B.A., F.G.S., with ten plates, xxviii.-xxxvii. (Lon- 

 don, Trubner & Co.) 



WE noticed the previous issue of this important serial of Indian 

 Paleontology in August last (see Geol. Mag. 1885, Dec. III. 

 Vol. II. p. 371). The present part, which completes vol. iii., contains 

 the Crocodilia, which occupy seven plates, some fragmentary remains 

 of Lacertilia and Ophidia, Sharks, Siluroid fishes, etc. 



The Crocodilia comprise only two species of true Crocodile, 

 namely, C. sivalensis, Lyd., and C. palceindicus, Falc. ; five species are 

 referred to Geoffroy's genus Gharialis, namely, G. gangeticus, G. 

 hysudricus, G. curvirostris, G. leptodus, G. paclujrhynchus, and a single 

 species to a new genus, Rhamphosiichas, viz. E. crassidens. Some 



