TYPE SPECIMENS OF INVERTEBRATE FOSSILS. 61 



45689. Archinacella instabilis incurva TJlrich and Scofield. 



Holotype. 

 Black River (Ord.). Goodhue County, Minnesota. 



TJlrich and Scofield, Geol. and Nat. Flist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 835, pi. 61, figs. 21-23. 



45690, Archinacella powersi TJlrich and Scofield. Plastotype. 



Stones River (Ord.). Beloit, Wisconsin. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1S97, p. S20, fig. ia; p. 829, figs. 3-5; pi. 

 61, fig. 4. 



45691. Archinacella richmondensis TJlrich. Holotype. 



Richmond (Ord.). Richmond, Indiana. 



TJlrich, Geol. and Nat. Hist. Surv. Minn., Final Rept., Ill, 

 Pt. II, 1897, p. 834, pi. 61, figs. 6, 7. 



45692. Archinacella rotunda Ulrich and Scofield. Holotype. 



Richmond (Ord. ) . Graf, Iowa. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 835, pi. 61, figs. 24, 25. 



43693. Archinacella rugatina Ulrich. Holotype. 



Richmond (Ord.). Middletown, Ohio. 



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

 1897, p. 835, pi. 82, figs. 5, 6. 



43694. Archinacella semicarinata Ulrich and Scofield. Holotype. 



Trenton (Ord.). Cannon Falls, Minnesota. 



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1S97, p. 833, pi. 61, figs. 12, 13. 



45695. Archinacella simulatrix Ulrich and Scofield. Holotype. 



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



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 833, pi. 61, figs. 10, xi. 



45696. Archinacella subrotunda Ulrich and Scofield. Holotype. 



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



Ulrich and Scofield, Geol. and Nat. Hist. Surv. Minn., Final 

 Rept., Ill, Pt. II, 1897, p. 834, pi. 61, figs. 26, 27. 



37970. Architarbus elongatus Scudder. Holotype. 



Upper Coal Measures. Braidwood, Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., IV, 1890, p. 449, pi. 40, 

 fig. 4; Foss. Insects N. America, 1890, p. 425, pi. 32, fig. 4. 



= Geraphrynus (Architarbus) elongatus. 



37993. Archiulus (?) glomeratus Scudder. Cotypes. 



37994. Upper Coal Measures. Mazon Creek and Braidwood, 



Illinois. 



Scudder, Mem. Boston Soc. Nat. Hist., IV, 1890, p. 436, pi. 37, 

 figs. 2, 3; Foss. Insects N. America, I, 1890, p. 412, pi. 29, 

 figs. 2, 3. 



