212 



REPORT OF NATIONAL MUSEUM, 1915. 



Dall, William Healey — Continued. 



iowdichi, Turbonilla {Ptycheu- 

 lima) ethelUna, Cyprma tal- 

 lista, Stromius llocyclus, Bit- 

 tium (priscum var.?) sora, B. 

 adela, Cerithium plectrum, Cc- 

 rithiopsis silicataj Lacuna pre- 

 cursor, Turritella (tampae 

 var.?) mcdioconstricta, T. sys- 

 toUata, T. litharia, T. atacta, 

 Assiminea aldra, Rissoina sii- 

 pralaevigata, Amnicola adesta, 

 Sinum imperforatum, Callio- 

 atoma tampicum, Helicina 

 posti, Nucula tampae, Lcda 

 posti. Area grammatodonta, 

 Glycym,eris lamyi, str e a 

 vaughani. Modiolus hlandus, 

 M. {Brachydontes) grammatus 

 var. curtulus, M. (.Ch-egaricUc) 

 minimus, Cardita {Glans) shep- 

 ardi, Codakia (Jagonia) scurra, 

 Phacoides (Bellucina) tam- 

 paensis, Diplodonta catopotium, 

 Erycina? indccisa, Bornia tam- 

 ■ • pae, Cardium {Trigoniocardia) 



lerberum, Callocardia (Agri- 

 opoma) mix, TclUna dira, T. 

 (Angelas) atossa, iSemelc sar- 

 donica, Coriula (Guneocorhula) 

 haghriana. 



GiDLEY, James Williams. An ex- 

 tinct marsupial from the Fort Union 

 witli notes on tlie Myrmecobidae and 

 other families of this group. 



Proc. U. S. Nat. Mus., 

 48, No, 2077, Jan. 

 28, 1915, pp. 395- 

 402, pi. 23. 

 Describes a new genus and 

 species of marsupial, Myrmcco- 

 ioides viontanensis, comparing 

 it especially with the living 

 MyrmecoMus. The description 

 is followed by a brief discus- 

 sion of the peculiar features of 

 the species, its possible affinities, 

 and the probable origin of the 

 marsupials, based on the l^nown 

 fossil remains. 



GiLMOBE, Chakles AVhitney. Oste- 

 ology of the armored Dinosauria in 

 the United States National Museum, 

 with special reference to the genus 



Stegosaurus. 



Bull. U. S. Nat. Mus., 

 No. 89, Dec. 31, 

 1914, pp. i-xi, 1- 

 143, pis. 1-37, figs. 

 1-73. 

 In this work a detailed ac- 

 count of the complete slieletal 

 anatomy of Stegosaurus is 



Gilmobe, Charles Whitney — Contd. 



given, the descriptive part be- 

 ing preceded by a brief account 

 of the discovery, plan of work, 

 and fauna of the quarries from 

 which the specimens were 

 obtained. 



The genus Stegosaurus is re- 

 viewed and redefined, and the 

 following species described : 

 Stegosaurus stenops, S. sulca- 

 tus, and a new species, S. longis- 

 pinus. The type specimen of 

 Hoplitosaurus marslii is de- 

 scribed and figured in detail for 

 the first time. The paper con- 

 cludes with a brief discussion of 

 the various life restorations of 

 Stegosaurus. The article is 

 based almost entirely upon 

 specimens in the U. S. National 

 Museum. 



On tlie genus Trachodon. 



Science (n. s.), 41, 

 No. 1061, Apr. 30, 

 1915, pp. 658-660. 

 The present use of the ge- 

 neric term Trachodon is dis- 

 cussed, the conclusion being 

 reached that in its application 

 Trachodon should be restricted 

 to one of the forms from the 

 Judith River formation ; also 

 that Claosaurus annectcns 

 Marsh should be regarded as a 

 synonym of Thespesius occi- 

 dental is Leidy. 



Hat, Oliveb P. 

 mals of lowji. 



The Pleistocene mam- 



loioa Oeol. Surv., 23, 

 1914, pp. 1-662, pis. 

 1-75, figs. 1-142. 

 The various stages of the 

 Pleistocene epoch are described. 

 Iowa is apparently the only 

 State in which has been demon- 

 strated the presence of all four 

 or five of the glacial stages. A 

 section of the paper is devoted 

 to a discussion of the character 

 and distribution of the loess. 

 The greater part of the report 

 is made up of descriptions of 

 the vertebrates, altogether 

 mammals, which have been re- 

 ported from the Pleistocene of 

 the State. Of these mammals 

 about 40 (species are known. 

 Many of the specimens de- 

 scribed and figured are the 

 property of the U. S. National 

 Museum. 



This paper accompanies the 

 Annual Report of the State 

 Geologist for 1912. 



