60 REPORT OP NATIONAL MUSEUM, 1&18. 



completed last year and accepted for publication by the Museum 

 under the title North American Early Tertiary Bryozoa, in which 

 over 700 new species and many new genera are described and illus- 

 trated. With its completion, Mr. Canu and Dr. Bassler have now 

 undertaken the study of the Bryozoa of the remaining Tertiary 

 formations of North America, a monograph which they expect to 

 complete within the coming year. These same authors also com- 

 pleted a report on the fossil Bryozoa of the Panama Canal Zone, now 

 in course of publication as a part of Museum Bulletin No. 103, and 

 a small monograph on the fossil Bryozoa of the West Indies, to be 

 published by the Carnegie Institution. 



Last year Dr. C. E. Resser, assptant curator, reported his Biblio- 

 graphic Index of American Cambrian Fossils as finished, but upon 

 the advice of friends he has extended the work to include the Cam- 

 brian of the world. The increased value to science of this wider 

 study is obvious, even though the completion of the work may be 

 delayed for several years. 



Dr. E. O. Ulrich concluded a study of the Museum's large collec- 

 tion of Blastoidea. Dr. Ulrich also spent considerable time on a 

 monographic study of certain families of Paleozoic Crinoidea. The 

 text of two monographs, one of the very peculiar family Cremacri- 

 nidae, and the other on the genus Anomalocrinus, was completed and 

 will be offered for publication as soon as the photographs necessary 

 for their illustration can be made. 



Mr. Frank Springer has been engaged on a monograph of the Silu- 

 rian crinoids of the Ohio Valley, based chiefty upon extensive mate- 

 rial obtained in recent years by his private collectors, largely by 

 means of quarrying operations in favorable localities in Tennessee 

 and Indiana ; drawings have been made for about 25 quarto plates. 



Dr. T. W. Stanton concluded his descriptive paper on the inverte- 

 brate fauna of the Cannonball marine member of the Lance forma- 

 tion, and Dr. J. B. Reeside, jr., finished his monograph on American 

 Jurassic ammonites belonging to the family Cardioceratidae. Both 

 of these papers are to be published by the United States Geological 

 Survey, but may be delayed on account of the war. Dr. Stanton has 

 also taken up the study of large collections of Alaskan Jurassic in- 

 vertebrates accumulated by the National Museum and Geological 

 Survey. 



Dr. W. H. Dall prepared or finished six reports on Tertiary fos- 

 sils from the Arctic and west coasts of North America, none of which 

 have yet been published. 



Vertebrate paleontology. — By far the most important collection of 

 fossil turtle remains ever brought together from the southwestern 

 part of the United States was transferred by the United States Geo- 

 logical Survey. Many of the specimens are suitable for exhibition, 



