87 



PLATE XXXIV. 



IlYMENIAOniON PEltLEVIS, BinVC'I'hwnk. 

 Vol. ii, p. 179, ' Moil. Brit. Spoiigiadto.' 



Fig. 1. — Represents the specimen of the species 

 presented to me by the ]ate Mrs. Griffiths, who ob- 

 tained it from a Torbay fisherman. Natural size. 



Fig. 2. — One of the skeleton spicula. X 150 

 linear. 



HrnrENiAcinoN crustula, Boirerban/r. 



Vol. ii, p. 185, ' Moil. Brit. Spcngiadtc' 



Fig. 3. — Represents the largest and finest specimen 

 of the species that I have seen, dredged on the 

 Diamond Ground, off Hastings. It exhibits the deep 

 depression in which numerous oscula are congregated. 

 Natural size. 



Fig. 4. — One of the large fusiformi-acuate skeleton 

 spicula. X 150 linear. 



Fig. 5. — A slender fusiformi-acuate, tension spicidum. 

 X 150 linear. 



Fig. 6. — One of the fusiformi-acuate spicula from 

 the dermal crust of tlie sponge. X 150 linear. 



Him liN I AC I DON All RE A, Bouuirhivnk. 

 Vol. -ii, p. 181, 'Moil. Brit. Spongiadaj. ' 



Fio-. 7. — Represents one of the specimens which I 

 obtained at Tenby, covering the greater portion of the 

 surface of the shell and its parasites. Natural size. 



