REVIEWS 261 



forms, while some indicate a possible Pennsylvanian age. From the 

 standpoint of stratigraphic relations the Barnett shale seems to be insepa- 

 rable from the beds which overlie it. The conclusion of the authors is 

 that the Barnett shale is probably Pennsylvanian, and may be correlated 

 with the lower part of the Morrow group of northern Arkansas and north- 

 eastern Oklahoma. The Marble Falls limestone, the middle member 

 of the Bend group, has a fauna similar to that of the Morrow group. It 

 may be correlated also with the Wapanucka limestone of southern 

 Oklahoma. It is certainly older than any of the Pennsylvanian divisions 

 which have been described in the northern Mid-Continent region. The 

 Smithwick shale, the upper member of the Bend group, contains a fauna 

 of which a very important element is confined, as far as is known at 

 present, to this formation. All of the associations of this fauna appear to 

 be with the Pennsylvanian, although the occurrence of such a form as 

 Bembexia nodomarginata is an interesting remnant of Mississippian 



aspect. 



A. H. B. 



Fauna from the Eocene of Washington. By Charles E. Weaver 

 AND Katherine Van Winkle Palmer. University of Wash- 

 ington Publications in Geology, Vol. I, No. 3, pp. 1-56, pis. 

 VIII-XII, June, 1922. 

 This, the third of the series of geological publications of the Uni- 

 versity of Washington, is a decided improvement upon the two preceding 

 numbers and appears, on the whole, to be equal to the best of the many 

 papers which have appeared on the West Coast Eocene. The authors 

 describe the University of Washington collecting stations from 315 to 

 370; describe one new genus, Phaenomya, of freshwater Pelecypoda; 

 and describe fifty-six new species and four new subspecies of mollusks. 

 (Not 64 new species as stated on page one.) 



Although the paper has fewer errors than many which have appeared 

 of late years on the paleontology of Western Eocene, there are some points 

 open to criticism, the most important of which, it is hoped, the authors 

 will correct in the " Stratigraphical and Faunal History of Northwest 

 Eocene" to be published later. It is not clear why the first two papers 

 of the series had continuous pagination and plate numbers while this one 

 goes back to page one, but does not interrupt the plate series. Six years 

 have elapsed since the appearance of the first number of the series of 

 publications; at this rate therefore an index to Volume I may not be 

 expected for several more years; in the meantime an alphabetical 



