l8o SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I48 



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 lc. Ventral, dorsal, lateral, posterior, and anterior views, X2, USNM 



142104, Waller loc. 191-H. 

 Id. Etched sagittal section, X4, USNM 142105, showing profiles of 



camarophorium, hinge plate, and spondylium, Waller loc. 169-H. 

 2-2b. — Coledium angarium n. sp., Barnett Formation, southwest of Mason, 



Tex 102 



2. Ventral, dorsal, lateral, posterior, and anterior views, X3, USNM 



142082. 

 2a. Ventral, dorsal, lateral, posterior, and anterior views, X3, USNM 



142079. 

 2b. Ventral, lateral, dorsal, posterior, and anterior views, X2, USNM 



142085, holotype. 



Plate 13 



1-2. — Coledium torvum n. sp., Morrow Series near Ft. Gibson, Okla. ; 



Schuchert coll. in Yale Peabody Museum 132 



1. Ventral, dorsal, lateral, posterior, and anterior views, X2, YPM 

 23248. 



la. Ventral, dorsal, lateral, posterior, and anterior views, X2, YPM 



23252. 

 lb. Ventral, dorsal, lateral, posterior, and anterior views, X2, YPM 



23254. 

 lc. Ventral, dorsal, lateral, posterior, and anterior views, X2, holotype, 



YPM 23258. 



2. Cross-section 2.5 mm. from beak, etched, X6, showing camaropho- 

 rium with septum duplex, intercamarophorial plate, and spondylium, 

 YPM 23260. 



Plate 14 



1-2. — Coledium undulattim n. sp., X2, Chappel Limestone near Brady, Tex. 



(Cloud loc. TF-406) 135 



1. Ventral, dorsal, and lateral views, USNM 142487. 



la. Ventral, dorsal, lateral, and anterior views, USNM 142489. 

 lb. Ventral, dorsal, lateral, and anterior views, USNM 142491. 

 lc. Ventral, dorsal, lateral, and anterior views, USNM 142504. 

 Id. Ventral, dorsal, lateral, and posterior views, USNM 142497. 



2. Ventral, dorsal, lateral, and posterior views, holotype, USNM 

 142501. 



2a. Ventral, dorsal, lateral, and anterior views, USNM 142502. 



Plate 15 



1-10. — Coledium evexum n. sp., exteriors X2, section (fig. 10) X4, from 



Chappel Limestone near Brady, Tex 112 



1. Ventral, dorsal, lateral, and anterior views, USNM 142134, Cloud 

 loc. TF-406. 



2. Ventral, dorsal, lateral, and anterior views, USNM 142138, Cloud 

 loc. TF^106. 



