photo B. E. Picton
Esper's (1794) water colour
B.E. Picton
B.E. Picton
from Sponge V
from Sponge V
incl. I. alderi, I. normani, I. clarkei, from Bowerbank (1874)
including I. gracilis, Bowerbank's (1874) pl. LVIII
incl. Halichondria thompsoni, from Bowerbank (1874)
spicule complement, from MCS Sponge V, C. Morrow