SUBORDER ALCYONARIA. 607 



between the papillae a little narrower than the fringe; papilla? deep 

 brown, in 3 to 4 series, crowded, slender and elongate, 20 to 24 in 

 the outer series. 



Plate 57, fig. 5, group, natural size; 5 a, under view of tentacles, 

 enlarged ; 5 b, upper view of the same. 



The long, salient polyps, and the slender papilla? distinguish this 

 species from the preceding. The interval above, between the oppo- 

 site fringes of a tentacle, is very much broader than in the umbellata, 

 and the papilla? are but four or five times longer than their breadth. 

 The groups are more deeply lobed than in thejftorida. 



NOTE. The Xenia purpurca, of Lamarck, figured by Esper, is a species of the genus 

 Spoggodia. 



The Akyonium terminates, of Quoy and Gaymard, appears to be a young zoophyte 

 of this genus, partly expanded (Voy. de 1'Ast., iv. 282, pi. 23, figs. 15-17). 



SUBFAMILY II. ALCYONIN.E. 



Carnosce ; polypis retractilibus, zoophytis contractis super fide sive levibus 

 sive verrucosis. 



Carnose ; polyps retractile ; surface of contracted zoophytes, either 

 smooth or verrucose. 



GENUS IV. AMMOTHEA. SAVIGNY. 



Alcyonidce carnosce, ramulosce aut fruliculosce, polypis in verrucas 

 inermes retractilibus. 



Carnose Alcyonidse, ramulous or fruticulose; polyps retracting into 

 verruca? not armed with spicula. 



The verrucse of the surface distinguish these species from the Al- 

 cyonia, the mode of growth from the Sympodia, and the absence of 

 spicula about the verruca?, from the Nephthya?. The genus is named 

 after one of the sea-nymphs. 



