NO. 10 CAMBRIAN FOSSILS, 4TH CONTRIBUTION RESSER I9 



Atlantic Province 



Sccnella ant i qua Kiaer 



" dcprcssa Kiaer 



" ? discinoidcs Schmidt (possibly two species) 



" clevata Cobbold = HcIcioncUa elevata 



" reticulata Billings 



" ? ttibcrcniata Schmidt 

 North America 



Scenella- coiitila Walcott 



" retusa Ford = (part ^ Pa/f;'/»a troycnsis) 



" varians Walcott = (part S. amii) 



" amii Matthew 



China 



Sccnella clofho Wa\cott ^^ Scenellopsis clotho 



" " Saito = S. saitoi 



" dilafatus IValcotI =^ .9. dilatata 



Scenella amii (Matthew) 



Metoptoma amii Matthew, Trans. Roy. Soc. Canada, 2nd ser., vol. 8, sec. 4, 



p. Ill, pi. I, fig. 12, 1902. 

 Scenella varians Walcott, Canadian Alpine Journ., vol. i, no. 2, pi. i, fig. 6, 



1908. 

 [Not Scenella varians Walcott, U. S. Geol. Surv. Bull. 30, p. 127, pi. 12, 



figs. 2, 2a, 1886.] 



Middle Cambrian, Stephen; (loc. 14s) Mount Stephen, near Field, 

 British Columbia. 



//o/o/y/'f.— Walker Mus. ( ?) ; plesiotype, U.S.N.M. no. 96483. 



Scenella Columbiana (Walcott) 



Crania ? Columbiana Walcott, Proc. U. S. Nat. Mus., vol. 11, p. 441, 1889. 

 Philhcdra ? Columbiana von Huene, Verhandl. Russ.-kais. Min. Gesell. St. 



Petersburg, 2nd ser., vol. 36, pt. 2, pp. 216, 298, 1899. 

 Philhcdra columbiana Walcott, U. S. Geol. Surv. Mon. 51, p. 724, pi. 81, 



fig. 10, 1912. 



Walcott reports the finding of two additional imperfect specimens 

 in 1907. Examination of these specimens leads one to doubt their 

 identity v^ith the type. It is possible that they are merely the apical 

 portions of Nisusia. 



The type is a minute form not very well preserved. It certainly 

 is not a brachiopod, so the best reference is to Scenella. This speci- 

 men may be merely a poorly or rather unusually preserved example 

 of Scenella amii. However, since no other such example has been 

 noted among the hundreds of Scenella amii specimens in the collec- 

 tion, this form may retain its specific rank. 



Middle Cambrian; (loc. 14s) Mount Stephen, above Field, British 

 Columbia. 



Holotype.— U.S.N.M. no. 58307. 



