518 Notices of Memoirs — Various Brief Notices. 



Turonian, Senonian, Eocene, Oligocene, Miocene, and Pliocene. The 

 country seems remarkable for the isolated Triassic hills which stand 

 up boldly from the surrounding country. A list of previous works 

 on Tunis is given, and M. Pervinquiere deserves our thanks for 

 a valuable addition to African geology. The book is issued from 

 Paris (Direction Generale des Travaux Publics), 1903. Price lofrs. 



5. MEitYCODUs. — A fine and perfect skeleton of the hypsodont 

 group of ruminants has been described and figured by W. D. Matthew 

 (in the Bull. Amer. Mus. N.H., xx, 1904). This is Merycodus oshorni, 

 a form related to the antelopes, but with branching, deciduous 

 antlers like those of the deer. The specimen came from the Middle 

 Miocene (Pawnee Creek Beds) of north-eastern Colorado, and was 

 found by Mr. Barnum Brown, of the American Museum Expedition 

 of 1901. The paper sketches the other known species of the 

 genus as well as species of the genera Blastomeryx, Lapromeryx, and 

 PalcBomeryx. 



6. The Mines of Hualgayoc, Peru. — Situated in a volcanic 

 region, in which the sedimentary rocks seem to be of Cretaceous age 

 from their fossil contents, the mines of Hualgayoc yield an abundance 

 of minerals. Those chiefly worked are lead and copper, and this 

 paper (published in the Bol. Cuerpo Ingen. Minas Peru, No. 6, 1904), 

 by F. Malaga Santolalla, is mainly devoted to them. Hualgayoc 

 is a province of Peru, and the author prefaces his description of the 

 mines with a sketch of the geography, history, and geology of 

 the area. The paper is well illustrated and has a topographical map, 



7. Tertiary Fauna of Florida. — Dr. W. H. Dall has recently 

 published in the Transactions of the Wagner Free Institute of Science 

 the concluding part of his "Contributions to the Tertiary Fauna 

 of Florida." This consists of the molluscan fauna of the Silex 

 beds of Tampa and the Pliocene beds of the Caloosahatchie river, 

 and includes in many cases a complete revision of the generic groups 

 treated of and their American Tertiary species. This part vi runs 

 from p. 1219 to p. 1654, pis. xlviii-lx, and with an index brings 

 a laborious and valuable work to a successful conclusion. 



8. North Polar Expedition, 1893-96. — Messrs. Longmans & Co. 

 have published vol. iv of the scientific results of this expedition, 

 edited by Di\ Fridtjof Nansen. The volume before us contains 

 Dr. Johan Kieer's paper in the Lower Silurian at Khabarora. The 

 age of the beds appears to be of the Scandinavian Esthonian type, 

 and praise is due to Dr. Kieer and Dr. Brogger for successfully 

 dealing with such unpromising material. Dr. Nansen contributes 

 to this volume his " Bathymetrical features of the North Polar seas, 

 with a discussion of the continental shelves and previous oscillations 

 of the shore-line," illustrated by maps and plates.^ 



9. Eelief Map of North America. — Although dated as long ago 

 as 1901, it may be worth while to call attention to a publication of 

 the Geological Survey of Canada entitled " Altitudes in the Dominion 



' See Professor Hall's Eeview iu om- August Number, p. 422. — Ed. Geol. Mag. 



