188 BRITISH SPONTTIAD.E. 



M. Norman, were two small specimens of Pecten varius. 

 One valve of each being nearly covered by a layer of 

 sponge not exceeding half a line in thickness. On 

 mounting a small portion of each in Canada balsam, 

 I found them to be very young specimens of 0. seriata, 

 but in only a partially developed condition. The usual 

 oscula were not apparent, and the defensive spicula 

 based on the skeleton fibres were few in number and 

 slender in their proportions. All the spicula charac- 

 teristic of the species were present, but only sparingly 



80. 



" These specimens are very instructive, as without a 

 careful microscopical examination their species certainly 

 never would have been suspected." 



SUBORDER IV, i, 209; n, 15. 



Genus 31. VERONGIA, Bow., i, 209; n, 15. 



VEROXGIA ZETLANDICA, Hoir., n, 3SO ; in, 177, PI. 

 LXX, figs. 914. 



1870 Cacospongia Zctlandica, SchiuiJt. Spong. Atlant. Geb., 

 p. 77. ' 



SUBORDER VII, i, 211 ; n, 10. 



Genus 32. DYSIDEA, Johnston, n, 16. 



1. DYSIDEA FRAGILIS (Montagu), n, 381 ; i, PI. XIV, 

 figs. 270272 ; in, PL LXIX. 



1370 Spongelia fragilis, Scliniidt. Spong. Atlant. Geb., p. 77. 

 1876 Dysidea fragilis (in 312 fathoms), Carter. Ann. Nat. 

 Hist., ser. 4, vol. sviii, p. 232. 



