57 



Test. jun. Solen minutus, Lin. — Hia- 

 tella minuta, and Anatina arctica, Tiirton. 

 In cavities of shells, and roots of sea weeds ; com- 

 mon. 



Fam. Tubicolae. 



LXXXIV. Pholas, Lin. 

 1. crispata, Liii. 

 Valves are occasionally thrown ashore at Douglas, 

 but it can scarcely be reckoned an inhabitant of the 

 Manx coast. 



ACEPHALA NUDA. 



Order. Heterobranchia. 



Fam. Ascidiae. 



Ascidia, Lin. 



Sub-gen. Pandocia. 



1. conchilega. 



Pandocia conchilega, Flem. — " Pandocia my- 

 tiligera, Savig^ (Flem.) — Ascidia conchi- 

 lega, Mtdl. 

 Not unfrequent. 



Sub-gen. Clavellina. 



2. lepadiformis. 



