HYMENIACIDON. 89 



wrongly given (n, 222) as "Dourie Voe, Shetland;" I 

 found it between tide-marks at Cullercoats, Northum- 

 berland. The mistake probably arose from the cir- 

 cumstances that at the time this species was sent to 

 Dr. Bowerbank to examine, there were also sent speci- 

 mens of Hymeniacidon carnosus which were from 

 Dourie Voe (N.). 



40. HYMENIACIDON FOLIATUS, Bow. t in, 182 ; PI. 

 LXXI, figs. 1, 2. 



41. HYMENIACIDON nous (Johnston), n, 206 ; in, PL 

 XXXVI, figs. 10-17. 



1861 Halina ficus, Bowerbank. List Brit. Marine Invert. 



Fauna (Brit. Assoc.), p. 70. 



1867 Ficulina ficus, Gray. Proc. Zool. Soc., p. 523. 

 1870 Suberites ficus, Schmidt. Spong. Atlant. Geb., p. 76. 



Habitat. Coralline Zone, Durham coast, abundant ; 

 Shetland abundant ; on a pebble between tide-marks, 

 Oban; Westport, Co. Mayo (N.). 



42. HYMENIACIDON STJLPHUPEUS (Bean], n, 208 ; in, 

 PI. XXXVII, figs. 13. 



1867 Suberites sulphured, Gray. Proc. Zool. Soc., p. 523. 

 1870 Suberites sulphured, Schmidt. Spong. Atlant. Geb., p. 76. 



Habitat. A small specimen encrusting the shell of 

 Turritella terebra, dredged at Roundstone Bay, Galway. 

 This sponge retains its sulphur-yellow colour a long 

 time after preservation, though it, like almost all 



