Plate VIII. 



SympagcUa anomaJa Ij. 



Fio'. 1. A niimLer of small and young specimens attached on an old dead 



stalk of the same species. J nat. size. (Sei. Coll. Mns. Sp. 



No. 455). 

 Fio-. 2. A medimn-sized specimen, attached to a \^\ece oï dead Chonel asm a. 



I nat. size. (Sei. Coll. Mus. Sp. No. 367). 

 Fig. 3. A large specimen, with a part of the wall removed to show the 



gastral surface. | nat. size. (Sei. Coll. Mus. Sp. No. 355). 

 Figs. 4, 5. Dermalia from different specimens. 300 x . 

 Fig. 6. Modified dermalia from the lower part of stalk. 300 x . 

 Figs, 7, 8. Gastralia from different specimens. 300 x . 

 Fig. 9. Canalaria from excurrent canal. 300 x . 

 Fig. 10. Strobiloplumicome. 300 x . 

 Fig. 11. Part of a strobiloplumicome, partially constructed to show the 



structure. 1000 x . 

 Figs. 12-14. Onychaster-like hexasters. 300 x . 



Fio". 15. Outer end of a terminal from an onychaster-like hexaster. 1000 x . 

 Fig. 16. Peculiar discohexaster, with branched terminals, — an inconstantly 



occurring form. 300 x . (From Sei. Coll. Mus. Sp. No. 473). 

 Figs. 17-19. Discohexasters from stalk. 300 x . 

 Fio-. 20. Dermal skeleton (dermalia and hypodermalia), seen surface on. 



About 40 X. 

 Fig. 21. Gastral skeleton (gastralia and underlying parenchymalia), seen sur- 

 face on. About 40 x . 

 FIl'. 22. Peripheral part of a section through the sponge-wall. Above, the 



dermal layer ; below, the periphery of choanosome. About 40 x . 

 Fi'^ 23. Part of a section through the wall. Below, the gastral layer. 



About 40 X . 



