280 ZOOPHYTES. 



West Indies? Lamarck. 



This species is remarkable, according to Lamarck, for the irregu- 

 larity of its cellules, and for the numerous serrate and denticulate 

 lamella? which cover their sides; and also for the thick and convex 

 border of the cells. The species is one of the Explanariee of La- 

 marck, arid was transferred by Blainville to his genus Echinastraea. 

 It may be doubted whether it belongs here. 



Explanaria ringens, Lamk., ii. 400, No. 5. Echinastraa ringens, Blainville, Man., 

 , Lamouroux, Encyc., 386. 378. 



4. ECHINOPORA REFLEXA. (Dana.} 



E.foliacea, unifrons ; foliis suberectis, lateribus reflexis et scepe margini- 

 bus coalitis (itaque scepe tubulatis] ; umbrina, ore parvulo, tentaculis 

 nullis ( ? ). Corattum supra spinuloso-striatulum, caliculis spinulosis, 

 tumidis, l'" paulo superantibus, lamellis majoribus 10-15, denticula- 

 tis ; extus, prope marginem obsolete striatulum. 



Foliaceous, unifacial ; folia suberect, sides reflexed and often coalescing 

 by the margin (thus forming tubes); colour, umber; mouth quite 

 small; tentacles none, except the minute tubercles over the spines. 

 Corallum above finely spinuloso-striate; calicles spinulous, tumid, 

 rather more than J of an inch broad ; large lamellae 10 to 15, denti- 

 culate ; outer surface, near the margin only, obsoletely fine striate. 



Plate 17, fig. 2, corallum, natural size; 2 a, animal enlarged; 2 b, 

 transverse section of a folium, enlarged. 



Feejee Islands. Exp. Exp. 



This coral forms large clusters of somewhat spreading folia growing 

 from a common base, to a height of ten inches or more. The folia are 

 often contorted and reflexed. The upper edge is thin and acute, and 

 for half an inch translucent; but below, the folia are one-third to 

 half an inch thick. The spinules of the surface are seen to be tubular 

 when broken across; they are less than a third of a line long. The 

 exterior surface is dead and mostly incrusted by other corals to within 

 half an inch of the margin, and on this part the fine stria? are scarcely 

 perceptible without a glass. 



