192 Annals of the South African Museum. 



well seen, as are also the stout teeth and open delthyrium. All the 

 specimens are in the state of casts, and the minute ornamentation is 

 not distinguishable. 



This species is widely spread, occurring in the Devonian of both 

 North and South America^ as Ulrich (ojj. cit.) has pointed out. 



Diviensions. — Brachial valve (No. 220), Length 10 mm. ; width 

 18 mm. 



Localities. — (No. 220) Fossiliferous 1st Sandstone, north of 

 homestead, Uitkomst. (No. 131) Warm Bokkeveld, Ceres. 



Conclusion. 



The Brachiopoda above described have a completely Devonian 

 stamp ; and there are none which suggest the presence of Silurian 

 or Carboniferous beds. 



The evidence from the examples of this group of invertebrates 

 alone is, however, insufficient to show what division or divisions 

 of the Devonian System may be represented in Cape Colony. 



Amongst typical Devonian forms may be mentioned Leptoca'Iia 

 flabellites, Vitulina imstulosa, Amhoccelia umhonata and the genera 

 Renselceria, Betzia, Trigeria, and Cryptonclla. 



The relations of this Cape Devonian fauna to that of the Falkland 

 Islands and of South and North America have been noticed by Ulrich 

 and other authors. The following table shows the common or allied 

 species amongst the Brachiopoda : — 



South Africa. South America. North America. 



Lingula aff. dcnsa Lhujula coheni Linf/iila densa 



Orhiculoidea bdiiii Orb. cf. humili^ Orb. liuniili-^ 



Orb. baini (Falk. Is.) 



Strojylieodonta cf. coiic'nuia Orthis[?]concimia(Fii\k. Is. )Strop}ieodo)>ta perplana 



Strophonella sp Strophomena sp. /3 Ulrich. . Str. ampla 



Orthothetes sulivaiii Orth. i^ulivayii (Falk. Is.) . . Orth. cJiemiDuiensis 



Orth. ar/assizi 



Orth. sp. a Ulrich 

 Choneteafalkhuidirii!^ Cli.fulklandicu.'^ (Falk. Is.) 



( 7i. comstocki 



Chonetes cf. coronatus Ch. roronatiis 



Chonetes cf. arcei (7;. arrri 



Chonetes aff. setirier Ch. setir/cr 



Orthis sp. ? Orthis sp. /S Ulrich Orthis lepidus 



Hensselceria sp. « R. suessava 



Rensseltcria sp. /S B. cxtmberlandiir 



Trigeria aff. gaudrifi Tr. gaudryi 



CryptoneUa baini Meri^tella ['?] riskowsJd . . Cryptonella planirostra 



Spirifer orbicjmji Spirifer orbiijiuji (Fs.\]s.. Is.) Spirifer murchisoui 



Sp. cJiuquisaca 



