424 ZOOPHYTES. 



Near Naples, Mediterranean Sea. Cavottni. 



Madrepora denudata, Cavolini, Pol. Mar., Mammillifera denudata, Ehrenb., G. xii. 



tab. 3, fig. 6. sp. 1. 



Cavolinia rosea, Schweig., Handb., 411. 



2. PALYTHOA AURICULA. (Lesueur.) Dana. 



P. rubescens ; polypis basi tantum coadunatis, prominentibus, turbinatis, 

 3'" latis, et 3-6'" altis ; discis 4'" latis, virescentibus ; tentaculis 26- 

 30, rubescentibus. 



Reddish ; polyps united only at base, prominent, turbinate, 3 lines 

 broad, and 3 to 6 high ; disks 4 lines broad, greenish ; tentacles 

 26-30, reddish. 



St. Vincent and Dominica, West Indies, covering the rocks at the 

 entrance of the port. Lesueur. 



Mammillifera auricula, Lesueur, Jour. Mammillifera auricula, Blainville, Man., 

 Acad. Nat. Sci. Philad., i. 178, tab. 8, 329, pi. 50, fig. 3. 

 fig. 2. 



3. PALYTHOA NYMPH^EA. (Lesueur.) Dana. 



P. auriculae affinis, rubro-lutescens ; discis luteis et tentaculorum basi 

 virentibus, tentaculis fere 50 biseriatis pallide brunneis, oribus pro- 

 minentibus. 



Resembling the auricula, yellowish-red ; disks yellow, with a green 

 circle at the base of the tentacles; tentacles about 50 in number, in 

 two series, and of a light brown colour ; mouth prominent. 



St. Christopher, West Indies. Lesueur. 



Mammillifera nymphcea, Lesueur, Jour. Mammillifera nymphcea, Blainville, Man., 



Acad. Nat. Sci. Philad., i. 178. Lesueur 329. 



states that " the mouth is divided on each The Alcyoiiium mammillosum, of Esper, 



side by four or five folds, and rises in the Pflanz. iii., tab. 7, is near the nympluea. 

 form of a button." 



