173 



PLATE LXVIII. 



Chalina Flemingii, Botoerhank. 



Vol. ii, p. 370, ' Mon. Brit. Spongiadse.' 



Fig. 1. — Represents the type-specimen parasitical on 

 a slender Fncus. Natiu^al size. 



Fig. 2.— A full-sized spiculum from tlie fibre of the 

 sponge. X 530 linear. 



Chalina Montaguii, Bowerhanlc. 



Vol. ii, p. 366, ' Mon. Brit. SpongiadcB.' 



Figs. 3 and 4. — Specimens obtained at Brighton by 

 Mr. Thomas Ingall. Natural size. 



Fig. 5. — A spiculum from the fibre of the sponge. 

 X 530 linear. 



Chalina Grantii, Boiverbanh. 



Vol. ii, p. 375, ' Mon. Brit. Spongiadse.' 



Fig. 6. — Represents the type-specimen found by 

 Mr. Thomas Ingall at Brighton. Natural size. 



Fig. 7. — One of the spicula from the skeleton fibre. 

 X 530 linear. 



