Note 11 — Chapter VI
Reading edition
I owe these facts to Canon A. M. Norman, who showed me illustrative specimens. They were originally described by Bowerbank (Monogr. Brit. Spongiadae, vol. II, pp. 18 and XX; vol. III, Pls. I and III). A specimen of G. compressa measured 5 inches, with a greatest width of 3-1/4 in. G. ciliata was found measuring 3 in. long and 3/4 in. wide. These dimensions are many times those of normal specimens.