REPORT ON THE DEPARTMENT OF INVERTEBRATE FOSSILS (PALEO- 

 ZOIC) IN THE U, S. NATIONAL MUSEUM FOR THE YEAR ENDING 

 JUNE 30, 188G. 



By 0. D. Walcott, Honorary Curator. 



The most iinportaut addition is the collection of fossils used in the 

 study of the faunas of the Middle Cambrian formations of the United 



States, from the U. S. Geological Survey. Many of the specimens are 

 types, and 250 are figured on the plates accompanying Bulletin 30 of 

 the U. S. Geological Survey. 



The list of the species in this collection is here presented :* 



Ace. No. Specimens. 



17447. ArchcBocyath.ua athuiticus, Billings 3 



billingsi, Walcott 1 



sp. ? 2 



Ethmophyllum pr of nudum, Billings 4 



rensselwricum, Ford 6 



varum, Ford 1 



whitney i, Meek 10 



Leptomitus zitteli, Walcott 5 



Protospongia fenestrata, Salter 9 



Strephochetus ? sp. ? 16 



Sponge ? 1 



Oolitic limestone 1 



Phyllographtus % simplex, Emmons 6 



Eocystites ?? Ungidactylus, Walcott 23 



Eocystites ? 5 



Lingulella ella, H. & W ! 117 



cwlata, Hall, sp 52 



? sp. (Perhaps young of L. cwlala) 14 



Kutorgina labradorica, Billings 44 



pannula, White (sp. ) 17 



prospeclensis, Walcott 17 



cingulata, Billings 112 



cingulata W 1 



1 



Acrotreta gemma, Billings 23 



Acrothele subsidua, White 77 



Obolella crassa, Hall, sp. (two casts) 43 



gemma, Billings 7 



nitida, Ford ?? 4 



sp.? 3 



? 1 



* Received from tho U. S. Geological Survey, through Charles D. Walcott, in charge 

 Division of Paleozoic Invertebrate Paleontology. 



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