28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 95 



WILBERNIA Walcott, 1924 



Wilbernia diademata (Hall) 



Conocephalifes diademattis Hall (part), i6th Ann. Rep. New York State 

 Cab. Nat. Hist, p. 167, pi. 7, fig. 36; pi. 8, fig. 21, 1863 (not pi. 7, figs. 

 37, 38== IV. halli; pi. 8, fig. 18 = indeterminate fragment). 



Hall's figure is not accurate, particularly in the restoration of the 

 eye lobes. 



Upper Cambrian, Franconia; Marine Mills, Minnesota. 



Cotypes. — A.M.N.H. ; cast cranidium, U.S.N.M. no. 89953 ; meta- 

 types, U.S.N.M. no. looio. 



Wilbernia halli, n. sp. 



Conocephalites diadcmatns Hall (part), see above. 



Dicellocephahis misa Berkey, Amer. Geol., vol. 21, p. 290, pi. 20, figs. 12, 13, 

 1898. 



Compared with W. diadeinata, this species is wider, has a wider 

 preglabellar area, and the rim is more upturned. 



Upper Cambrian, Franconia ; Root River, and Franconia, Wis- 

 consin. 



Cotypes. — A.M.N.H. ; plesiotype, Columbia Univ. 



Wilbernia walcotti, n, sp. 



Ptychoparia ? diademata Walcott (part), U. S. Geol. Surv. Mon. 32, p. 462, 

 pi. 64, figs. 2-2b, 1899 (not 2c^ W. htidsonensis from Wisconsin). 



This species is more like the genotype IV. pcro in its curved outline 

 and size. It, however, has a narrower preglabellar area and somewhat 

 wider rim. 



Upper Cambrian, D17 Creek; Soda Butte Creek, Yellowstone 

 National Park, Wyoming. 



Cotypes. — U.S.N.M. no. 35227. 



Wilbernia hudsonensis, n. sp. 



Ptychoparia f diademata Walcott (part), U. S. Geol. Surv. Mon. t,2, p. 462, 

 pi. 64, fig. 2c, 1899. 



Unfortunately, this specimen was never properly labeled, for which 

 reason it is necessary to choose from the specimens on hand from the 

 locality. One pygidium has the same green marks as on the Yellow- 

 stone specimens figured at the same time, and likely is the holotype. 

 At any rate it agrees with the drawing, except for obvious restoration. 



W. hudsonensis is larger than any described species, but is par- 

 ticularly characterized by the straight course and considerable depth 

 of the pleural furrows and grooves and its transverse anterior margin. 



Upper Cambrian, Franconia; (loc. 79) Hudson, Wisconsin. 



Holotype.— U.S. l^l.'M.. no. 35228. 



