ART. 4 CAMBRIAN CONCHOSTRACA — ULRICH AND BASSLER 107 



Walcott, C. D. — Continued. 



1891. The Fauna of the Lower Cambrian or Olenellus Zone. Tenth Ann. 



Rept. U. S. Geol. Surv., pt. 1, pp. 509-774. {Isoxys, new genus, 



?I. chilhoiveana, new species, Leperditia dermatoides Walcott, Aris- 



tozoe rotundaia Walcott, A. troyensis and Nothozoe vermontana 



Whitfield.) 

 1905. Cambrian Faunas of China. Proc. U. S. National Museum, vol. 29, 



pp. 1-106. (Six new species of Bradoria from the Middle Cambrian 



of Shensi, China.) 

 1912. Middle Cambrian Branchiopoda, Malacostraca, Trilobita, and Meros- 



tomata. Smiths. Misc. Coll., vol. 57, No. 6, pp. 145-228, 11 pi. 



(Various new genera and species of Anostraca, Notostraca, and 



Hymenocarina.) 



1912. Cambrian Brachiopoda. Monograph U. S. Geol. Surv., No. 51, pp. 



1-809, pi. 104 (Contains locality numbers with list of species.) 



1913. The Cambrian Faunas of China. Carnegie Institution, vol. 3, 375 pp., 



29 pi. (Six species of Aluta described previously under Bradoria.). 



Wallerius, I. D. 



1895. Undersokningar ofver Zonen med. Agnostus laevigatus i Vestergotland, 

 Jamte en inledande ofversikt af Vestergotlands samtliga Paradoxidea 

 lager. Lund, p. 62. {Leperditia primordialis Linnarsson.) 



WiMAN, Carl. 



1902. Studien uber das Nordbaltische Silurgebiet. Bulletin Geological In- 

 stitute University of Upsala, vol. 6, pt. 1, No. 11, pp. 12-76, pis. 

 1-4. (Species of Aparchites, Beyrichona, Sellula, new genus, 

 Bradorona, Indiana, and Hipponicharion from the Olenellus sand- 

 stone drift of the North Baltic.) 



ZiTTEL, Karl A. von. 



Grundziige du Palaeontologie (Palaeozoologie). Revised by F. 

 Broili, Part Invertebrata, ed. 5. (Refers Beyrichona, Hipponi- 

 charion, Bradoria, Aluta, and Polyphyma to family Estheriidae under 

 order Phyllopoda.) 

 1913. Textbook of Paleontology, vol. 1, ed. 2, English edition. Translated 

 by Charles R. Eastman with section on Ostracoda and Phyllopoda, 

 revised by R. S. Bassler. (Refers Bradoria and related genera to 

 Bradoriidae under the Order Conchostraca.) 



