Subfamily DIAULULINAE. 



Body neither hard nor soft ; depressed or subdepressed ; 

 notaeum usually minutely villous, often silky; tentacles digitiform; 

 branchial aperture rounded, crenulate, branchial leaves tripinnate ; 

 anterior margin of foot bilabiate, the upper lip notched. Labial 

 armature none. Rhachis of radula naked. Pleurae multidentate, 

 usually hooked. Penis usually unarmed. 



Genus PELTODORIS, Bergh, 1879. 



Peltodoris, Bergh. "Ueber die Gattung Peltodoris," Mittheil- 



ungen aus der Zoologischen Station zu Neapel, II, 2, 



1879, p. 222. — Malacol. Untersuchungen, Sup. Heft 



I, 1880, p. 41. — Neue Nacktschnecken der Siidsee, 



IV, Jour. Mus. Godeffroy, XIV, 1878. —Malacol. 



Unters., XVI, II, 1889, p. 815. 



Body subdepressed, the circumference oval, subrigid, minutely 



granular above. Tentacles digitiform. Branchial aperture 



rounded, the branchiae of few leaves, usually tripinnate. 



Labial armature none. Rhachis of radula naked, pleurae 

 multidentate, the teeth hooked. 



Prostate gland large. Penis and vagina unarmed. 

 The genus Peltodoris was established by Bergh in 1879 for 

 the reception of the type species P. atromaculata Bergh, from the 

 Mediterranean, and for a second species, P. crucis (Oersted), 

 from the Antilles. The genus is much similar to Discodoris, 

 differing in the less soft body, and especially in the unarmed 

 labial disc. Whether such a slight difference is sufficient to 

 establish a distinct genus or not may be a matter of doubt. 

 In this genus are placed the following species : 



1. Peltodoris atromaculata Bergh. 



Bay of Naples. Bergh 1. c. 



2. Peltodoris crucis (Oersted). 



Antilles, St. Thomas, (Riise). Sainte Croix, (Oersted). 

 Journ. de Conchyliologie, III, 3, 1863. 



3. Peltodoris mauritiana Bergh. 



Mauritius Isl. Bergh, Mai. Unters. XVI, 2, p. 815. 



4. Peltodoris angtdata Eliot. 



East Africa. Eliot, Proc. Zool. Soc. London, 1903. 



5. Peltodoris aurea Eliot. 



East Africa. Eliot 1. c. 



