SUBORDER ALCYONARIA. 609 



Carnose, forming spreading, incrusting plates, and not stipitate ; polyps 

 retracting into verrucse which are not armed with spicula. 



The Sympodia are incrusting Amrnothese, or resemble the Anthelise, 

 excepting that the polyps are retractile. Blainville covers the same 

 ground, with the genus Anthelia, as used by him. The following 

 species are referred to this genus by Ehrenberg. 



1. SYMPODIUM FULIGINOSUM. (H. 4- Ehrenberg.) 



S. fuliginosum, bipollicare ; tentaculis pattidioribus, brevioribus ; polypis 

 expansis 6'" longis et 3'" latis. 



Fuliginous, 2 inches ; tentacles quite pale, short ; polyps 6 lines long, 

 and expanded star 3 lines broad. 



Red Sea. 



Savigny, Egyp., Polypes, pi. 1, fig. 6. Sympodium fuliginosum, Ehrenberg, G. 



S.ftiliginosuni, Lamk., 2d ed., ii. 624. xxviii., sp. 1. 



2. SYMPODIUM C.ERULEUM. (H. Sf Ehrenberg.} 

 8. fuliginosum, tentaculis kete ccerukis, parvis, gradlibus. 

 Fuliginous, tentacles bright blue, small, slender. 

 Red Sea. 



Si/mpodium cceruleum, Ehrenb., G. xxviii., sp. 2. , Lamk., 2d ed. ii. 624, No. 2. 



3. SYMPODIUM ROSEUM. (Ehrenberg.} 



S. suberosum, varium, roseum, 2^-3'" crassum ; verrmis paulum promi- 

 nulis aut obliterates ; tentaculis albis. 



Suberose, of varying form, rose-coloured, 2^ to 3 lines thick; verruca 

 but little prominent or obsolete ; tentacles white. 



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