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. 



1 8. 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 Befgh. Mai. 



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



I, 1880, p. 37; System. 1892, p. 101. 

 Subfamily Discodoridinae. 



22. Discodoris branneri MacFarland. sp. 

 nov. 



Riacho Doce, Alagoas. 



