REPORT ON THE ALCYONARIA. Ixv 



the remark of the authors that it is nearly related to Blcpharogorgia = Acanthogorgia. 

 Similarly Brandella intricata, Gray, is a Muriceid, and Wrightella, Gray, belongs to 

 the Melitodidse. 



The following genera have been as yet distinguished : — : 



1. Nicella, Gray. 



2. Scirpearia, Cuvier, emend. Studer. 



3. Scirpearella, n. gen. 



4. Juncella, Valenciennes, emend. 



Studer. 



5. Ellisella, Gray, emend. Studer. 



6. Verrucella, Milne-Edwards. 



7. Gorgonella, Milne-Edwards. 



8. Ctenocella, Valenciennes. 



9. Phenilia, Gray. 



10. Heliana, Gray. 



1. Nicella, Gray, Cat. Lithophytes Brit. Mus., p. 40. 



The colony is upright, branched, with a thin coenenchyma and protruding verrucse, 

 which arise perpendicularly and appear to be terminally truncated. The polyps arise 

 from either side of the stem and branches leaving a middle space free. The spicules form a 

 cortical layer of small double clubs and an internal layer of long, densely warty 

 spindles. 



2. Scirpearia, Cuvier, Regne Anim., Nouv £d., t. iii. p. 319, 1830. 



The colony is simple, with a cylindrical calcified axis and thin coenenchyma. The 

 polyps are seated in two longitudinal rows on each side of the stem. The spicules are 

 double clubs and spindles. The genus may include Scirpearia mirabilis, Cuvier, and 

 Viminella fiagellum, Gray. 



3. Scirpearella, n. gen. 



Colony simple or very feebly branched. Axis calcareous, brittle, smooth or grooved. 

 Polyps arranged in rows or spirals, retractile with rather more or less prominent verrucse. 

 The coenenchyma is moderately thick and finely granular. The spicules are spiny 

 spindles and double clubs. 



4. Juncella, Valenciennes, ex parte, Comptes rendus, t. xli. p. 14 ; Kolliker, Icones 



histiologicse, pt. ii. p. 140 ; Studer, Monatsber. d. k. preuss. Akad. d. Wiss. 

 Berlin, p. 659, 1878. 



The colony is simple or branched, the polyps are sometimes small, disposed in two 

 lateral rows, sometimes with well-developed and elongated verrucse. The coenenchyma 

 is thick, with an external layer which contains simple and double clubs. 



