338 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



41291. Isochilina ampla Ulrich. Cocypes. 



Trentou (Ord.). Nashville, Tennessee. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 179, 

 pi. 11, figs. 8a-d. 



41292. Isochilina jonesi Wetherby. Plesiotype. 



Trenton (Ord.). Near Harrodsburg, Kentucky. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 179, 

 pi. 11, figs. 9a-c. 



43155. Isochilina kentuckyensis Ulrich. Holotype. 



Stones River (Ord.). High Bridge, Kentucky. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 179, 

 pi. 11, figs. na-d. 



= Leperditia armata. 



41826. Isochilina rectangularis Ulrich. Holotype. 



Onondaga (Dev.). Falls of the Ohio. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 182, 

 pi. 16, figs. 2a-c. 



a 1 288. Isochilina saffordi Ulrich. Holotype. 



Trenton (Ord.). Nashville, Tennessee. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 178, 

 pi. 11, figs, ioa-d. 



41294.. Isochilina subnodosa Ulrich. Holotype. 



Trenton (Ord.). Perryville, Kentuck}'. 



Ulrich, Journ. Cincinnati Soc. Nat. Hist., XIII, 1890, p. 177, 

 pi. 11, fig. 7a-c. 



25703. Isotelus cyclops Green. Plastotype. 



Mohawkiau (Ord.). Western New York. 



Green, Mon. Trilobites N. America, Phila., 1832, p. 69. Cast 

 No. 24. 



= Isotelus platycephalus. 



25700. Isotelus gigas DeKay. Plastotype. 



Lorraine (Ord.). Cincinnati, Ohio. 



Green, Mon. Trilobites N America Phila., 1832, p. 67. Cast 

 Nos. 21, 22. 



41900. Isotelus maximus Locke. Plastotype. 



Richmond (Ord.). Granger, Minnesota. 



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

 1894, p. 703, fig. 5. 



25604.. Isotelus megalops Green. Plastotype. 



Trenton (Ord. j. Near Trenton Falls, New York. 



Green, Mon. Trilobites N. America, Phila., 1832, p. 70. Cast 

 No. 25. 



= Isotelus platycephalus. 



