TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 321 



43575. Homotrypa ( ? ) similis Foord. Plesiotypes and figured 



sections. 

 Trenton (Ord. j. Near Cannon Falls, Minnesota. 



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

 1893, p. 242, pi. 20, figs. 28-33. 



41761. Homotrypa splendens Bassler. Cotypes and figured sections. 



Richmond (()r(l.). Wilmington, Illinois. 



Bassler, Proc. U. S. Nat. Mus., XXVI, 1903, p. 587, pi. 25, figs. 

 11-14. 



43570. Homotrypa subramosa Ulrich. Cotypes and figured 



sections. 

 Black River (Ord.j. St. Paul, Minnesota. 



Ulrich, Geol. and Nat. Hist. Surv. Minn., Final kept., HI, I't. I, 

 1S93. P- 239- pl- 19. figs- 21-28. 



43580. Homotrypa tuberculata Ulrich. Cotypes and figured 



sections. 

 Black River (Ord.). Cannon Falls, Minnesota. 



Ulrich, Geol. and Nat. Hist. vSurv. ■Minn., Final Rei)t., Ill, Pt. I, 

 1893, p. 240, text fig. 14. 



41766. Homotrypa wortheni (James). Plesiotypes and figured 



.sections. 

 Richmond (Ord.). Richmond, Indiana. 



Bassler, Proc. V. vS. Nat. Mus., XXVI, 1903, p. 5S3, pl. 24, figs. 

 TO- 1 4. 



41768. Homotrypa wortheni intercellata Bas.sler. Cot5'pes and 



figtired .sections. 

 Richmond (Ord.). One-fourth mile east of Osgood, 

 Indiana. 



Bassler, Proc. U. S. Nat. Mus., XXVI, 1903, p. 584, pl. 24, fig. 17. 



41767. Homotrypa wortheni prominens Bassler. Cotypes. 



Richmond (Ord.). Klkhorn Creek, near Richmond, 

 Indiana. 



Bassler, Proc. U. S. Nat. Mus., XXVI, 1903, p. 584, pl. 24, figs. 

 15-16. 



43763. Homotrypella contexta Ulrich. Fragment and figured 



.sections of holotype. 

 Richmond (Ord.). Wilmington, Illinois. 



Ulrich, Geol. Surv. 111., VIII, 1890, p. 412, pl. 32, figs. 5a, 5I). 



43561. Homotrypella instabilis Ulrich. Cotypes and figured 



sections. 

 Black River (Ord.). Minneapolis, Minnesota. 



Ulrich. Geol. and Nat. Hi.st. vSurv. :Minn., Final Rept., HI, Pl. 

 I, 1893, .p. 229, pl. 18, figs. 9-20. 



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