INTRODUCTION 9 



1 6. Tethys cervina Dall and Simpson. 



Mageio, Alagoas. 



17. Notarchus lacinulatus (Couthouy). 



Rio Janeiro Harbor, Gould, U. S. 

 Explor. Exp. Moll., p. 223. 

 Tribe Pleurobranchoidea. 



Family Pleurobranchidae. 



18. Pleurobranchus agassizii MacFarland, 

 sp. nov. 



Riacho Doce, Alagoas. 



19. Pleurobranchaea inconspicua Bergh. 



Mouth of Cotinguiba River. Bergh, 

 Semper's Reisen, Wissenschaftliche 

 Resultate, VII: Malacol. Unters., 

 IV, I, I, 1897, p. 49. 



Suborder Nudibranchiata. 

 Tribe Tritonoidea. 



Family Tritoniidae. 



20. Tritonia cucullata Gould. 



Coast of Brazil. Gould, U. S. Expl. 



Exp. Moll., 1852, p. 308. 

 =Marionia occidentalis Bergh. Chal- 

 lenger Exp., X, 1884, p. 49, La Plata 

 and Buenos Aires. 

 Tribe Doridoidea. 



Family Dorididae. 



Subfamily Archidoridinae. 



21. Staurodoris verrucosa (Cuvier). 

 Armagao, Province Santa Catarina. 



• Von Ihering, Jahrb. deutsch. Mala- 



kozool. Ges., XIII, 3, 1886, p. 230. 



=Staurodoris januarii Beirgh. Mai. 



Unters., XIII, 1878, p. 583 ; Sup. H. 



I, 1880, p. 37; System. 1892, p. loi. 



Subfamily Discodoridinae. 



22. Discodoris branneri MacFarland. sp. 

 nov. 



Riacho Doce, Alagoas. 



