90 BRITISH SPONGIAD^. 



colours in sponge, gradually fades out and leaves the 

 sponge wMte (N.). 



" On the 29th June, 1875, Mr. Hillier, of Kamsgate, 

 sent me a specimen of Filustra chartacea from Pegwell 

 Bay, the lower part of the stems of which were thinly 

 coated by H. sulpJiureus for rather more than half an 

 inch in height " (J. S. B.). 



43. Htmeniaoidon oelatus (Qrcmt), ii, 212 ; iii, PI. 

 XXXVIII, figs. 5, 6. 



1867 CliffiM celata, Gray. Proo. Zool. Soc, p. 525, 

 1870 Vioa celata, Schmidt. Spong. Atlant. Get., p. 76. 



44. Htmeniaoidon olavigeb, Bow., ii, 211 ; iii, PI. 

 XXXVII, figs. 20—22. 



1867 Sulerites cJavigera, Gray. Proc. Zool. Soc, p. 523. 



45. Htmeniaoidon tenebrosus, Bow., n. sp., iv, Plate 

 XV, figs. 1—5. 



" Sponge coating, thin. Surface even, smooth. 

 Oscula and pores inconspicuous. Dermal membrane 

 abundantly spiculous ; spicula dispersed, ovo-spinu- 

 late, long, but rather shorter than those of the skeleton. 

 Skeleton abundantly spiculous ; spicula ovo-spinulate, 

 long, and rather slender. Sarcode abundant, dense, 

 dark amber-coloured. 



" Colour. — In the dried state, nut-brown. 



" Habitat. — Birterbuy Bay, Galway, Ireland ; West- 

 port Bay tide marks ; Kev. A. M. Norman. 



