THIRD REPORT OF THE DIRECTOR I906 I57 



Platyceras steinmanni Clarke 



6371 i-9-|-2-i TYPE Platyceras steinmanni Clarke. 



Arch, do Mus. Nac. do Rio de Janeiro. 1899. 

 V. 10. Author's Eng. ed. 1900. p. 30, pi. 4, fig. 8, 9. 

 Devonic (Maecuru group) 



Rio Maecuru, Para, Brazil 

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



Platyceras symmetricum Hall var. maecuruense Clarke 



6372 i-2-|~^-^ TYPE Platyceras symmetricum var. 



maecuruense Clarke. Arch, do Mus. Nac. 

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

 ed. 1900. p. 31, pi. 4, fig. I, 2. 

 Devonic (Maecuru group) 



Rio Maecuru, Para, Brazil 

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



Platyceras whitii Clarke 



6373 i-^|-§-3- TYPE Platyceras whitii Clarke. Arch, do 



Mus. Nac. do Rio de Janeiro. 1899. v. 10. Author's 

 Eng. ed. 1900. p. 28, pi. 4, fig. 3, 4. 

 Devonic (Maecuru group) 



Rio Maecuru, Para, Brazil 

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



Platyceras whitii Clarke var. curua Clarke 



6374 i-^^A TYPE Platyceras whitii var. curua 



Clarke. Arch, do Mus. Nac. do Rio de Janeiro. 

 1899. V. 10. Author's Eng. ed. 1900. p. 29, 

 pi. 4. fig. 5. 



Devonic (Maecuru group) 



Rio Curua, Para, Brazil 

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



PLECTONOTUs Clarke 

 Plectonotus derbyi Clarke 

 ^375 --P-- TYPE Plectonotus derbyi Clarke. Arch. 

 do Mus. Nac. do Rio de Janeiro. 1899. v. 10. 

 Author's Eng. ed. 1900. p. 38, pi. 3, fig. 14-16. 

 Devonic (Maecuru group) 



Rio Maecuru, Para, Brazil 

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



