.'j06 Proceedings of the Royal Irish Academy. 



colour aud hovny natiue. This sea-shrub sends forth round whitu eggs, 

 larger than any of the genus. 

 LocaJitij. — Isle of Bourbon. 



Jnncella hystrix. 



JujuxUa Ays/ri.c- Valenciennes, Comptes Eendus, xli., p. 14. 

 Jnncella hystrii: Milne-Edwards and Hainie, CoralL, i., p. 186. 

 Juncella hystrix Johnson, xix., p. 143. 

 Jnncella hystrix Johnson, xviii., p. 506. 



The only description of any importance of this species is as follows : — 

 Stem delicate. Verrucae markedly projecting. 

 Locality. — Bahia. 



Juncella vimen. 

 Jnncella vinun Valenciennes, Comptes Eendus, xli., p. 14. 

 Jnno^lla vimen Milne-Edwards and Haime, CoralL, i., p. 186. 

 Milne-Edwards and Haime describe this species thus : — 

 Verrucae disposed laterally in such a manner that a large distinct 

 non-polyi)-bearing median space is left. 

 Locality. — Isle of Bourlx)n. 



Joncella sorcolns. 



Junccila snrcntns Johnson, xviii., p. 506. 

 Juncella surculns Johnson, xix., p. 143. 

 Locality. — Senegal. 



Joncella laevis. 

 1865. Jnncella lacvig Verrill, xlviii., 1865, p. 189. 

 1870. Jnncella laevis Gray, xii., p. 29. 



Verrill's original description is as follows : — 



"Corallum tall, simple, subcyliudrical, rather slender, diminishing in 

 size both at the summit and near the base, where the polyps become 

 obsolete. Cells adpressed, scarcely prominent, arranged in two broad 

 bands, leavinf/ a narrow, median, iiaked space on each side, along which 

 there ia a well-marked groove] they are placed alternately, at a distance of 

 about one-fifth (-2) inch, in about six vertical rows on each side, pro- 

 ducing a quincunx arrangement ; axis slender, cylindrical, calcareous, white, 

 surrounded by about sixteen longitudinal lobes, two of which are larger 

 and correspond with the lateral grooves ; the otheis to the rows of polyps. 

 Length of the single specimen, imperfect at each end, 20 inches ; greatest 

 diameter, | (-25) inch. Colour yellowish-brown, in alcohol." 



