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PLATE XXXII. 



HYMENIACIDON CARUNOULA, Bowerbank. 



Vol. ii, p. 166, ' Mon. Brit. Spongiadee.' 



Fig. 1. An average-sized specimen of the species 

 from St. Katherine's Cave, Tenby, from a dried 

 specimen. Of the natural size. 



Fig. 2. One of the slender acuate spicula, from 

 the dermal membrane. X 250 linear. 



Fig. 3. A large-sized skeleton spiculum. X 250 

 linear. 



Fig. 4. A small-sized skeleton spiculum. X 250 

 linear. The greater portion of the skeleton spicula 

 are intermediate in size between figures 3 and 4. 



HYMENIACIDON SANGUINE A, Bowerbank. 



Vol. ii, p. 168, ' Mon. Brit. Spongiadse.' 



Fig. 5. Represents a specimen of the species from 

 the Island of Boffin, Connemara, sent to me by the 

 Rev. Robert Hudson. It is of about the average size 

 and in the dried condition. Natural size. 



Fig. 6. One of the slender, acuate spicula, from 

 the dermal membrane. X 250 linear. 



Figs. 7 and 8. Two of the skeleton spicula. X 250 

 linear. The spicula vary in size in every degree 

 between the two figured ones. 



I have also received a small specimen of this species 

 from my friend Mr. C. W. Peach, who found it in 

 Fowey Harbour in 1847. 



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