SUBORDER ALCYONARIA. 637 



GENUS IV. SYRINGOPORA. GOLDFUSS. 



TubiporidcB acrogence, fasciculatce, coralli tubis septis conicis transversis 

 axeque tubulato penitus instructis. 



Acrogenous Tubiporidse, fasciculate ; the tubes of the coralltim divided 

 within by transverse conical septa and having a tubular axis. 



No recent species are known ; and the fossil species are confined to 

 the older rocks. The tubes are without rays, and thus afford no de- 

 cided evidence as to the number of tentacles to the polyps. Small 

 processes connect them at intervals. 



This genus was first indicated by Guettard, and named Calamites, 

 for which Goldfuss substituted Syringopora. It corresponds to the 

 Harmodites of Fischer: and Milne Edwards refers here with reason 

 the Microsolena of Lamouroux, whose figure appears to represent a 

 cast of a cluster of tubes. 



Calamites, Giicttard, Mem., iii. 532. , Lamarck, 2d ed., ii. 327. 



TuLiporites, Parkinson, Org. Rein., ii. 18. Harmodites, Fischer, Oryct. de Mosc. 



Xi/riiigapora, Goldfuss, Petref., 76. Microsolena, Lamouroux, Exp. Meth., 65, 

 , Blainville, Man., 353. pi. 74, fig. 24-26. 



FAMILY V. GORGONID^E. 



Alcyonaria secretiones corallicas e pedibus elaborantia, et scEpius alias 

 internas subcakareas discretas. 



Alcyonaria forming foot-secretions, and usually other subcalcareous 

 tissue-secretions, which are separable from the former. 



The formation of foot-secretions easily separable from the animal 

 layer which covers them, distinguishes the Gorgonidae from the other 

 Alcyonaria. The mode of growth is acrogenous, and budding takes 

 place from a parent cluster. The stems lengthen cumulately by 



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