140 NEW YORK STATE MUSEUM 



6277 -^-y-1 PLASTOTYPE Clarke. Arch, do Mus. Nac. do Rio de 



Janeiro. 1899. v. 10. Author's Eng. ed. 1900. pi. 2, 

 fig. 6 



Siluric Rio Trombetas, Para, Brazil 



O. A. Derby & J. M. Clarke, donors 



6278 ^^-^ PLASTOTYPE Clarke. Arch, do Mus. Nac. do Rio de 



Janeiro. 1899. v. 10. Author's Eng. ed. 1900. pi. 2, 



fig-. 7- 



Siluric Rio Trombetas, Para, Brazil 



O. A. Derby & J. M. Clarke, donors 



6279 ^-Q^i TYPE: PLASTOTYPE Clarke. Arch, do Mus. Nac. do 



Rio de Janeiro. 1899. v. 10. Author's Eng. ed. 

 1900. pi. 2, fig. 8. 



Siluric Rio Trombetas, Para, Brazil 



O. A. Derby & J. M. Clarke, donors 



6280 ^-V"- TYPE: PLASTOTYPE Clarke. Arch, do Mus. Nac. do Rio 



de Janeiro. 1899. v. 10. Author's Eng. ed. 1900. 

 pi. 2, fig. 9. 



Siluric. Rio Trombetas, Para, Brazil 



O. A. Derby & J. M. Clarke, donors 



CHONETES Fischer 

 Chonetes cf. nova-scotica Hall 



6281 ^^-^-^ HYPOTYPE Chonetes nova-scotica Hall. 



Canadian naturalist and geologist, i860. 5: 144. 



Chonetes cf. nova-scotica Clarke. Arch. 

 do Mus. Nac. do Rio de Janeiro. 1899. ^' ^^^ 

 Author's Eng. ed. 1906. pi. i, fig. 25. 



Siluric Rio Trombetas, Para, Brazil 



O. A. Derby & J. M. Clarke, donors 



LINQULA Bruguiere 

 Lingula cuneatas^^ Lingula cf. oblata 

 Lingula cf. oblata Hall 



6282 -^-^^ HYPOTYPE Lingula oblata Hall. Geology of 



New York; report on the 4th District. 1843. P- 77- 

 Lingula cuneata Derby. Arch, do Mus. 

 Nac. do Rio de Janeiro. 1879. 2:92. 



