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 BULLIRE II. 



Bulla, 18 species, 2 species microscopic, 50 specimens. 



New S. Wales, S. Pacific Ocean, Ireland, Mediterra- 



nean Sea. 

 Aplustrum, 1 species, 2 specimens. Mexico. 

 Scaphander, 1 species, 2 specimens. Mediterranean. 

 Bullsea, 1 species, 10 specimens. Malta. 



APLYSIAD.E III. 



Aplysia, 1 specics, 4 specimens. Malta. 

 Dolabella, 1 species, 2 specimens. Mediterranean. 



PLEUROBRANCHIDJE IV. 



Umbrella, 1 species, 5 specimens. Malta. 



Berthella, 2 species, 3 specimens. Mediterranean. 



CLASS II.GASTER0P03A; ORBER IV. NCCLEOBRANCHIATA. 



FIROLID.E I. 

 Carinaria, 1 species, 3 specimens. Canary Islands. 



ATLANTID^ II. 

 Atlanta, 1 species, 3 specimens. Canary Islands. 



CLASS III. PTEROPOBA. 



HYALEID.E I. 



Hyalaea, G species, 30 specimens. Red Sea, Mediterranean 



Sea, Malta. 



Cleodora, 1 species, 5 specimens. Mediterranoan. 



Cuvieria, 1 species, 4 specincens. Australia ? 



