EXPLANATION OF PLATE XXV. 



Figures 1-2 DALMANITES ILLINOIENSIS n. sp p. 275 



1, Dorsal view of a nearly complete pygidium, from Bonfield, 

 111. (Pal. Coll. Walker Museum, No. 6,835, Gurley Collection.) 

 2, Dorsal view of another less complete pygidium, from near 

 Lemont. (Pal. Coll. Walker Museum, No. 9,913.) 



Figures 3-5 DALMANITES PLATYCAUDATUS n. sp p. 272 



3, Dorsal view of a nearly complete cephalon, a plaster cast 

 from a natural mould, from near Lemont. (Pal. Coll. Wal- 

 ker Museum, No. 10,752.) 4, Dorsal view of a nearly com- 

 plete pygidium, from near Lemont. (Pal. Coll. Walker Mu- 

 seum, No. 9,878. Collected by X. H. Hyde.) 5, Dorsal 

 view of a nearly complete individual, from near Lemont. 

 (Pal. Coll. Walker Museum, No. 9,877. Collected by L. H. 

 Hyde.) 



Figures 67 DALMANITES VERRUQOSUS Hall p. 280 



. 6, Dorsal view of an incomplete cephalon, from Bonfield, 

 111. (Pal.'Coll. Walker Museum, No. 6,834, Gurley Collec- 

 tion.) 7, Dorsal view of an incomplete pygidium, from 

 Jersey County, 111. (Pal. Coll. Walker Museum, No. 6,833, 

 Gurley Collection.) 



