103 



PLATE XLII. 



Haliohondria distorta, Botverbanl:. 



Vol. ii, p. 210, 'Mon. Brit. Spongiaite.' 



Fig. 1. — Represents tlie specimen presented to me 

 by Mrs. Griffiths, obtained from tlie Brixham Trawler. 

 Natural size. 



Fig. 2. — From a small portion of the dermal mem- 

 brane, exhibiting the polyspiculous network of that 

 organ. X 80 linear. 



Fig. 3. — An average-sized acerate spiculiim, from 

 the skeleton. X 80 linear. 



Fig. 4. — An average-sized acuate, skeleton spiculum. 

 X 80 linear. 



