TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 415 



43555. Monotrypa magna Ulrich. Holotype and figured sections. 

 Stones River (Ord.). Dixon, Illinois. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 1893, p. 304, pi. 27, figs. 28, 29. 



43554. Monotrypa nodosa Ulrich. .Cotypes. 



Richmond (Ord.). Savannah, Illinois. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, Pt. I, 

 !893> P- 3° 6 - 



43779. Monotrypa rectimuralis Ulrich. Cotype and figured 



sections. 

 Cincinnatian (Ord.). Alexander County, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 462, pi. 38, figs. 4a, 4b. 



43684. Monotrypella aequalis Ulrich. Holotype and figured 



sections. 

 Utica (Ord.). Cincinnati, Ohio. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., V, 1882, p. 247, pi. n, 

 figs. 3-3D. 



43751. Monotrypella appressa Ulrich. Cotypes and figured 



sections. 

 Middle Devonian. Rock Island, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 453, pi. 46, figs, i-ie (on 

 plate as M. simplex in error). 



= Eridotrypa appressa. 



43780. Monotrypella crassimuralis Ulrich. Figured sections of 



cotype. 

 Richmond (Ord.). Wilmington, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 452, pi. 38, figs. 2C-21. 

 = Rhombotrypa crassimuralis. 



35401. Monotrypella quadrata (Rominger). Plesiotypes. 



Richmond (Ord.). Oxford, Ohio. 



Hayes and Ulrich, U. S. Geol. Surv., Folio 95, 1903, illustration 

 sheet, figs. 9, 10. 



= Rhombotrypa quadrata. 



43685. Monotrypella subquadrata Ulrich. Cotypes and figured 



sections. 

 Richmond (Ord.). Osgood, Indiana. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., V, 1882, p. 249, pi. 11, 

 figs.4-4b. 



= Rhombotrypa subquadrata. 



135874. Montacuta ? actinophora Dall. Holotype. 



Upper Oligocene. Oak Grove, Santa Rosa County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. V, 1900, p. 1172, 

 pi. 44, fig. 2. 



