10 OPISTHOBRANCHIATA OF BRAZIL 



23. Discodoris voniheringi MacFarland. 

 sp. nov. 



Riacho Doce, Alagoas. 

 Subfamily Diaululinae. 



24. Thordisa ladislavii (Von Ihering). 



Armagao, Prov. Santa Catarina. Von 

 Ihering, Jahrb. d. Mai. Ges., XIII, 

 3, 1886, p. 234. 



25. Thordisa dubia Bergh. 



Rio Janeiro Harbor, Rat Island, 

 Bergh, Bull. Mus. Comp. Zool. 

 Harvard, XXV, 1894, p. 178. 



26. Peltodoris greeleyi MacFarland. sp. 

 nov. 



Riacho Doce, Alagoas. 

 Family Doriopsididae. 



27. Doriopsis atropos Bergh. 



Rio Janeiro. Bergh, Jahrb. d. D. Mai. 

 Ges., VI, 1879, p. 49. 



Tribe Aeolidoidea. 



Family Aeolidiadae. 

 Subfamily Aeolidianae. 



28. Spurilla braziliana MacFarland, sp. 

 nov. 



Riacho Doce, Alagoas. 

 Subfamily Favorininae. 



29. Phidiana selencae Bergh. 



Rio Janeiro. Bergh, Beitraege zur 

 Kenntniss der Aeolidiaden. VI. 

 Verb. d. k. k. zool.-bot. Gesellsch. 

 in Wien, 1878, p. 560. 

 Family Pleurophyllididae. 



30. Pleurophyllidia muelleri Von Ihering. 

 Armagao, Prov. Santa Catarina, Von 



Ihering, Jahrb. d. Mai. Ges., XIII, 

 3, 1886, p. 223. 



In the above list the gymnosomatous and thecosomatous 

 Pteropods have been left out of consideration. Of the thirty 



