(7. S. Geoliwjical Survey of the Territories, 



:?late IV. 



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T. SINGL#1« * SON, * j HIi_mDELPHI,i 



i-8 PALAEOSYOPb PALUDOSUS | 9.-18. HYRACHYUS AGRARTUS. 



19 SU HYRACKYUS KXIM1DS. 



