SUBORDER ALCYONARIA. 635 



in the musica, and not so regular. The papilla are irregularly diva- 

 ricate. The yellow ring around the mouth has eight small squares 

 on its outer margin, one towards each tentacle, and the brownish-red 

 portion is octagonal in outline, with the sides of the octagon a little 

 concave. 



4. TUBIPORA SYRINGA. (Dana.) 



T. potypis pattide violaceis, papillis approximates et in planum integrum 

 digestis ; tubis coratti fimbriatse affinis. 



Polyps pale violet, papillae in contact and arranged neatly in an even 

 plane; tubes of the corallum as in the Jimbriata. 



Plate 59, fig. 1, part of zoophyte, expanded ; 1 a, polyp, enlarged ; 

 1 b, section of a polyp, showing the interior ; 1 c, part of a visceral 

 lamella, with clusters of ovules attached. 



The Feejee Islands, in shallow waters along the shores. Exp. Exp. 



This species can hardly be distinguished from the fimbriata by its 

 corallurn ; yet in its polyps it is very peculiar. Owing to the even 

 arrangement of the papilla, the tentacles appear at first to be destitute 

 of the usual fringe. The margin, when examined with a high power, 

 shows a series of punctures, one of which is at the extremity of each 

 papilla. 



5. TUBIPORA CHAMISSONIS. (Ehrenberg.) 



T. tentaculorum papillis dupliciter seriatis ; tubis coralli f "' latis, densius 

 confertis (in pollice 10-15); septis crebrioribus. 



Papillce of the tentacles arranged in two series ; tubes of the corallum 

 ^ of a line broad, rather closely crowded (10 to 15 in an inch); septa 

 quite numerous. 



Radack Archipelago, Pacific Ocean. Chamisso. East Indies. 



This species has larger tubes than the musica. The animals were 

 first observed and figured by Chamisso. 



