150- BEITISH SPONGIADj^!). 



and on some portions of it tEey exMbited an inclination 

 to fasciculation." 



61. IsoDiCTTA Beanii, Bow., II, 334 ; iii, PI. LYIII, 



figs. 1 — 6. 



18S1 CMhriaBeanii, BA&ley. Jour. Lin. Soc. Zoology, xix, 

 p. 485. 



62. ISOBICTYA FirNALIS„-B0W., n. Sp., IV, PI XV, figs. 6 — 



la. 



1875 Tsodicbtja 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- 

 conspifiuous. Dermal membrane pellucid, spiculous ; 

 tension-spicula acuate, short and stout, subfasciculate, 

 rather numerous, basally incipiently spinous ; retentive 

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

 merous, and rarely palmato-tridentate equi-anchorate ; 

 also simple and contort, bihamate, minute and very 

 slender, rather few in number. Skeleton — spicula 

 aeuatej, 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. 



" Golour^ — In the dried state, milk-white. 



" Habitat. — On one of the Atlantic cables 150 miles 

 from the Lands End in 200 fathoms ; Sir James 

 AndersoTi. 



" MiBammed.r^ln the dried state. 



