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Panopoea, 1 species, 2 speciinens. Sicily. 

 Bissomia, 2 species, 5 specimeus. Sicily. 

 Olycimeris, 1 spccies, 1 spccimen. North America. 



ANATINID/E XIX. 



Anatina, 1 species, 2 speeimens. Philippine Islands. 

 Ostreodesma ? 1 species, 1 specimon. United Sfcates. 

 Thracia, 1 species, 1 specimen. Norway ? 

 Pantlora, 2 species, 3 specimcns. Sicily. 



GASTROCHiENID.E XX. 



Gastrochoena, 2 species, 6 epecimens. Malta. 

 Clavagella, 4 species, 6 specimens. Malta. 

 Aspergillum, 1 specics> 2 specimens, Java ? 



PHOLATID^E XXI. 



Pholas, 4 specics, 10 specimens. Sicily, Malta. 

 Teredo, 1 speeies, 1 specimen. Malta. 

 Fistulana, 1 species, 1 specimen. Singapore. 



CLASS VI. TUIICATA. 



Ascidium, 1 species, 2 specimens. 



CIRRIPEDIA. 



Tubicinella, 1 species, 5 specimens. 



Coronula, 4 species, specimens. Malta 



Balanus, 10 specics, 27 specimens. Malta, Moditerranean' 



Acasta, 2 spccies, 8 spccimcns. Britain, Philippine Islands. 



