Smithsonian Report, 1915. — Walcott. 



Plate 11 



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DiKELOCEPHALIN/E: UPPER CaIVIBRIAN TRILOBITES. 

 1. Dikdoi'cplialus minncmtcnsis Owen. From Goodhue County, Minn. 

 2-5, 5a. Haukia crass imarginata (Whitfield). From Sauk County, Wis. 



