DEPARTMENT OF INVERTEBRATE FOSSILS. 221 



A ii-. No. Specimens. 



17312. Troohonema beecheri, Whitfield 6 



bcloiteiisiv, Whitfield 11 



Baphistoma Unticulare, Salter 7 



nasonl, Hall 4 



Pleurotomaria subconica, Hall 8 



Holopea ? n . sp 1 



Subulites elongatus, Conrad 8 



Murckisou la gracilis, Hall (5 



iricarinata, Hall 8 



helicteras, Salter 11 



Gon ioceras occidentalism Hall 2 



Orthoccras multicameratiim, Hall 1 



(Aelinoceras) beloltensis, Whit 6 



Phragmoceras /abilities, Conrad 15 



3 



llUvnus ovatus, Conrad 9 



Dicellocephalus ? 3 



Twenty-seven genera, 40 species, aud 339 specimens. 



Mr. Powers deserves credit for sending a neatly labeled collection of 

 Trenton fossils that contains a good representation of the species named, 

 some of which are very rare aud in good condition. 



Ace. No. Specimens. 



16684. From D. S. Deering, Independence, Iowa (November 10, 1885) : 



Silicified coral, probahly of the genus Miclieliuia, species un- 

 known 1 



16763. From Frank Burns, U. S. Geological Survey (November 10, 1885) : 

 Trenton group, Maury County, Teun. : 



Columnaria alvcolata, Goldfuss 1 



16782. From H. C. Duvall, Washington, D. C. : . 

 Devoniau, Charleston, Ind. : 



Nucleocrinus Verneuili Troost .' 1 



17280. From W. A. Finkelnburg, Winona, Minn. : 

 Trenton Limestone: 



Asaphus Barrancli, Hall (cast) 1 



platycephalus, Stokes (cast) 1 



Calymene senaria 1 



Potsdam Sandstone : 



Ptychoparia (fragments of four species) 4 



17379. From Wiley Britton, Springfield, Mo. : 



Productus semireticulatus 1 



Spirifera logani 1 



. An old accession not heretofore recorded (Catalogue Nos. 15054-15078). 



Stansbury Expedition Collection : 

 Carboniferous fossils : 



Zaphrentis ? multilamellatum, Hall 9 



stansburiji, Hall 5 



Faviphyllum ? rugosum, Hall 3 



Productus sp. ? 2 



com, D'Orb 4 



semireticulatus, Martin 2 



Chonetes granulifera, Owen 2 



