138 



REPORT OF NATIONAL MUSEUM^, 1909. 



GiDLEY, James Williams — Coutiuued. 

 The new species Oi'ibos is based 

 on National Museum material 

 from Alaska. The species Boothe- 

 rlum is founded on a specimen 

 now in the Kent Scientific Mu- 

 seum of Grand Rapids, Michigan. 



Notes on the fossil mammalian 



genus Ptilodus, with descriptions of 



new species. 



Proc. U. 8. yat. Mus., 

 xxxvr. No. 1689, June 

 19, 1009, pp. 611-626, 

 pl. TO. 

 This article includes a revision 

 of the species of the jjenus Ptilo- 

 dus, and a new species is pro- 

 posed with a detailed description 

 of the skull, lower jaws, and such 

 parts of the skeleton as are pre- 

 served in the type specimen. The 

 affinities of the genus, and the 

 relationships of the multitubercu- 

 late group as a whole, are also 

 briefly discussed, and a few notes 

 are added on the probable habits 

 of Ptilodus. 



GiLMORE, Charles W. Osteology of 

 the Jurassic reptile Camptosaurus, 

 with a revision of the species of the 

 genus, and descriptions of two new 

 species. 



Proc. r. 8. Xat. Mus., 

 XXXVI, No. 1666, April 

 17, 1909. pp. 197-332, 

 pis. 6-20, figs. 1-48. 

 The early part of the paper is 

 devoted to a detailed account of 

 the osteological structure of Camp- 

 tosaurus, which is followed by a 

 discussion of the genus and a sys- 

 tematic description and revision 

 of the species. Two new species, 

 Camptosaurus bronni and C. de- 

 pressus, are described. In con- 

 clusion, the geographical and geo- 

 logical distribution of the genus 

 is discussed, with a few remarks 

 on the restoration of Campto- 

 saurus. 



GiRTY, George H. On some new and 



old species of Carboniferous fossils. 



Proc. U. S. Xat. Mus., 

 XXXIV, No. 1614, July 14, 

 1908, pp. 281-303, pis. 



XIV-XXI. 



Contains descriptions of 4 new 

 genera, 11 new species, and 1 

 new variety of Carboniferous fos- 

 sils, all of which are figured. 



IlAY, Oliver P. The fossil turtles of 

 North America. 



Carnegie Institution of 

 WasJiington, Washington, 

 1908, pp. 1-568, pis. 

 l-i:i, figs. 1-704. 

 This work is based partly on 

 the materials in the paleontolog- 

 ical collection of the U. S. Na- 

 tional Museum, and it aims to 

 give a detailed description of all 

 the species, 266 in number, known 

 up to the date of publication. Of 

 these 76 species are new. ISIost 

 of the species are figured. They 

 are referred to the following 

 superfamilies : Amphicheli/dia, 



Pleurodira, Cryptodira, and Trio- 

 ni/choidca. The descriptive part 

 of the book is preceded by sections 

 on the osteology of the living 

 families of the order, on the modi- 

 fications which turtles have under- 

 gone since their earliest appear- 

 ance, on their primary and sec- 

 ondary characters, on the classi- 

 fication of the order, its deriva- 

 tion, and on the geographical and 

 geological distribution. 



On certain genera and species 



of carnivorous dinosaurs, with spe- 

 cial reference to Ceratosaurus iiasi- 

 cornis Marsh. 



Proc. r. S. Xat. Mus., 

 XXXV, No. 1648, Oct. 31, 

 1908, pp. 3.51-366, figs. 

 1-4. 

 The paper here recorded deals 

 first with the species referred by 

 Marsh to the genus Labrosaurus, 

 and a doubt is expressed as to the 

 affinity of these species. The re- 

 lationship of these species to 

 Leidy's Antrodemus ralens is 

 questioned. The differences be- 

 tween AUosanrus and Crcosaui'us, 

 both Marsh's genera, are discussed. 

 The relationships of the genera 

 Deinodon, Dryplosaurus, and .4?- 

 hertosaurus are considered. The 

 greater part of the paper is de- 

 voted to a description of the skull 

 which belongs to the type speci- 

 men of Ceratosaurus nasicornis 

 Marsh. 



. Descriptions of five species of 



North American fossil turtles, four 

 of which are new. 



Proc. U. 8. Xat. Mus.,xxs.v, 



No. 1640, Nov. 9, 1908, 



pp. 161-169, pis. XXVI. 



XX VII, figs. 1-3. 



The fossil turtles here described 



