150 BRITISH SPONGIADyE. 



and on some portions of it they exhibited an inclination 

 to fasciculation." 



61. ISODICTTA BBANII, Bow., n, 334 ; in, PL LVIII, 



figs. 1 6. 



1881 Clathria Seanii, Ridley. Jour. Lin. Soc. Zoology, xix, 

 p. 485. 



62. ISODIOTYA FUNALIS, Bow., n. sp., iv, PI XV, figs. 6 



10. 



1875 Isodictya funalis, Bowerbank. Jeffreys and Norman, 

 Submarine Cable Fauna, Ann. Nat. Hist., ser 4, 

 vol. xv, p. 176. 



" Sponge massive, sessile. Surface smooth, but un- 

 even. Oscula simple, dispersed, minute. Pores in- 

 conspicuous. Dermal membrane pellucid, spiculous ; 

 tension-spicula acuate, short and stout, subfascicnlate, 

 rather numerous, basally incipiently spinous ; retentive 

 spicula bi- and tridentate equi-anchorate, rather nu- 

 merous, and rarely pahnato-tridentate equi-anchorate ; 

 also simple and contort, bihamate, minute and very 

 slender, rather few in number. Skeleton spicula 

 acuate, stout, rather short, basally incipiently spinous ; 

 primary lines tri- or quadrispiculous, rarely more ; 

 secondary lines mostly unispiculous, rarely more than 

 bispiculous. Interstitial membranes sparingly spicu- 

 lous ; spicula same as those of the dermal membrane. 



" Colour. In the dried state, milk-white. 



" Habitat. On one of the Atlantic cables 150 miles 

 from the Lands End in 200 fathoms ; Sir James 

 Anderson. 



" Examined. In the dried state. 



