j[g0 t)r. R. BERGH, 



Subfam. VIII. Platydorididae. 



Flatydons. 



Ästeronotus. 



Dictyodoris. 

 Subfam. XIX. Chromodorididae. 



Chromodoris. 



Casella. 



Ceratosoma. 



Thorunna. 



Aphelodoris. 

 Subfam. X. Miamiridae. 



Miamira. 



Orodoris, 



Sphaerodoris. 



Subfam. 1. Bathydorididae. 



Corpus {magnum) fere semiglohosum, molle, margine palliali vix 

 ullo ; tentacida sat magna, nonnihil applanata, acuminata ; hranchia e 

 fasciculis omnino discretis compluribus (6) fruticulosis non retracfilibus 

 formata ; podarium sat latum. 



Bulbus pJiaryngeus permagnus, Uli Tritoniadarum sat similis; 

 armatura labialis nulla; mandibulae magnae, sat applanatae, processu 

 masticatorio nullo, margine masticatorio quasi laevi. Bens medianus 

 radulae nonnihil compressus ; dentes laterales numerosi, fortes, hamati, 

 edentuli. 



Glandida hermaphrodisiaca a hepate discreta; penis inermis. 



I. Bathydoris Bgh. 



R. Bergh, Rep. on tlie Nudibrancliiata. Challenger-Exped. Zool., vol. 10, 

 1884, p. 109—116. 



1. B. abyssorum Böh. — M. pacific. 



Subfam. 2. Hexabrauchidae. 



E. Behoh, Malakol. Unters., Heft 13, 1878, p. 547—566; Supplement- 

 heft 1, 1880, p. 32; Heft 16, part 1, 1888, p. 827—830. 



Corpus sat molle (magnum), sat applanatum, elongato- ovale ; dorso 

 laevi ; limbo palliali lato, undulato, margine tenui undulato ; tentacula 

 sat magna, foliacea, margine crispato; brancJda e fasciculis discretis 



