50 BRITISH SPONGIAD.2E. 



specimen of the species in the cabinet of Mr. W. 

 Saville Kent," read " represents the largest of the 

 specimens dredged by the Rev. A. M. Norman at 

 Jersey." On comparing the figure with the de- 

 scription of the specimens, the student would be at a 

 loss to reconcile the illustration with the account of 

 Mr. Kent's specimen ; he will, however, find the 

 description of the specimen from which the drawing 

 was made on page 319. Dr. Bowerbank apparently 

 chose this specimen for illustration as being the largest 

 he had seen, and " in a much finer condition than the 

 type one found by Mr. Kent." 



3. MICROCIONA FRAUDATOR, Bow., in, 275 ; PI 



LXXXIII, figs. 711. 



4. MICROCIONA TUMULOSA, Bow. 9 n. sp., iv, PI. XI, figs. 



14. 



" Sponge massive, tumulous, tumuli conical, large, 

 parietes thick ; surface minutely rugose. Oscula 

 within the cloacal tumuli. Pores inconspicuous. 

 Dermal membrane abundantly spiculous ; spicula ace- 

 rate, same size and form as those of the skeleton, dis- 

 persed. Skeleton-columns numerous, compact, long 

 and slender, diffused ; spicula acerate, rather slender. 

 Interstitial spicula few in number, same as those of 

 the skeleton. 



" Colour. In the dried state, externally dull grey, 

 internally blood red. 



" Habitat. Westport Bay, County Mayo, at extreme 

 low-water spring tides ; Rev. A. M. Norman. 



