608 ZOOPHYTES. 



1. AMMOTHEA VIRESCENS. (Savigny.} 

 A. virescens, patula, subtilius et laxc ramulosa, mollis, tentaculisflavidis. 



Greenish, spreading, finely and lax ratnulous, soft, tentacles yellowish- 

 Red Sea. Savigny. Ehrenberg. 



Ammothea virescens, Savigny, Egyp., Po- Nephthca Cordieri, Audouin, Explic. des 



lypes.. pi. 2, fig. 6. planches de Savigny. 



, Lamk., ii., 628, No. 1. Neptcea Savignyii, Blainville, Man., 523, 



, Lamour., Exp. Meth., 69. pi. 88, fig. 6, and Ammothea virescens, 



, Ehrenb., G. xxvi., sp. 1. p. 522. 



2. AMMOTHEA THYRSOIDES. (H. <Sf Ehrenberg.) 



A. effusa, ramis cylindricis, pollicaribus, erectis, simpliciter carnosis, 

 verrucosis. 



Spreading, branches cylindrical, an inch long, erect, simply carnose, 

 verrucose. 



Red Sea. Ehrenberg. 



Ammothea thyrsoides, Ehrenb., G. xxvi., sp. 2. , Lamk., ed. ii., 629, No. 3. 



NOTE. Milne Edwards adds to this genus (Lamarck, 2d ed. ii., p. 629) the following 

 species, described and figured by Quoy and Gaymard : A. imbricatum, Voy. de 1'Ast., 

 pi. 23, iv. 281, figs. 12-14; A. ramosum, ibid., p. 275, figs. 8-11, and with a query, 

 also, A. amicorum, ibid., 276, pi. 22, figs. 13-15. There is so much uncertainty with 

 regard to the figures, that a re-examination of them is necessary before the species can 

 be satisfactorily characterized. The polyps are represented without papillae to the ten- 

 tacles, which sometimes appears to be the case when contracted, but not otherwise. 



GENUS V. SYMPODIUM. II. & EHRENBERG. 



Akyonidce carnosce, ezplanato-ejfusce, incrustantes, non stipitatcz, polypi* 

 in verrucas inermes retractilibus. 





