3 taken place. 



South American Siluroids. — G. A. Boulenger has published 

 (Proc. ZooL Soc. Lond. April, 1891) an account of the Siluroid Fishes 

 obtained bv Dr. von Ihering and Mr. Wolff in Rio Grande do Sul, 

 Brazil. The following is a list of the new species added to the 

 Brazilian fauna: Pimelodella eigenmanni n. sp. n. for 1>. buekleyi E. 

 & E. not Boulenger. 2, ]'■-> "duj/imehydn^ cuittdde*, '■'>. (Horinclu* nigri- 



The Spermatophores of Diemyctylus. — The fertilization of the 

 Irodela has been until lately very imperfectly understood. The 

 2Cent observation of Gasco a n< I Zellu on European torn;-, and * iaye's 

 mdies of Diemyctylus have proved beyond a doubt that fertilization 

 ■ internal, but there is no direct cluneal contact between the sexes. 



