Dr. J. E. Gray on the Fleshy Alci/otioid Comb. 129 



externally ; brandies and polype-cells with superficial spicules. 

 Polype-cells subcyliiidrical, incurved. Polyjjes retractile. 



1. NEniTHYA, Savigny. 



Coral fleshy, with a large horizontal basal mass. Stem 

 erect, divided above into heads or spikes of polypes ; branches 

 and polype-cells with many large superficial and few internal 

 spicules. Polype-cells crowded on all sides of the ovate club- 

 shaped tei-minal branchlets. Polypes half-retractile, leaving an 

 incurved tubercle covered with fusiform spicules. 



1. Nephthya Savignii^ Ehrenb., Savigny, Polyp. Egypte, t. 2. 



f. 5. {N. Chabrolii^ Audouin. N. innominata^ Blainv.) 

 Hah. Eed Sea. B.M. 



2. Nephthya polyanthus. {Ammothea polyanthus ^ Duchass. & 



Michel. 15, t. 1. f. 6.) 

 Ilah. West Indies. 



3. Nephthya parasitica. [Ammothea parasitica j Duchass. & 



Michel. 15, t.l.f. 3,4,5.) 

 Hah. West Indies. 



4. Nephthya aurantiaca^ Verrill. 

 Hah. China Seas. 



2. Ammothea, Savigny, Pol. Egypte. 



Coral fleshy, with a horizontal creeping basal mass. Stem 

 erect, divided above into heads or spikes of polypes. Stem and 

 branches with very few minute superficial spicules, and Avith 

 many internal spicules. Polype-cells crowded on all sides of 

 the oval club-shaped terminal branchlets ; polype-cell sub- 

 cylindrical, incurved, lobed at the mouth. 



Ammothea virescens^ Savigny, Polyp. Egypte, t. 2. f. 6. 

 [Nephthea Cordieri^ Audouin. Neptea Savignii, Blainv.) 

 Hah. Bed Sea. B.M. 



3. Capnella. 



Coral erect ; stems clustered, coriaceous, granular, divided 

 into short branches ; outer surface studded with small, flat, 

 smooth, irregular-shaped spicules. Polype-cells crowded and 

 imbricate on all sides of the oval club-shajicd branchlets ; 

 polype-cell campanidate, slightly eight-lobed. Polypes re- 

 tractile. 



Capnella indrricata, Quoy & Gaim. Voy. Astrol. iv. 281, t. 23. 

 f. 8-14. {Ammothea imhricata, M.-Edw.) 

 Hah. New Zealand, Australia. ' B.M. 



Ann. (& Mag. N. Hist. Ser. 4. lo^. iii. 9 



