606 ZOOPHYTES. 



4. XENIA FLORIDA. (Lesson.} Dana. 



X. pallide c&ruleo-glauca, lobata ; polypis " latis, J" exsertis ; tentacnlis 

 lanceolatis, papillis brevissimis (parce oblongis], 3-seriatis. 



Pale bluish glaucous, lobed ; polyps of an inch broad, an inch 

 prominent when fully expanded ; tentacles lanceolate ; papillae very 

 short, but little longer than broad, in 3 series. 



Plate 57, fig. 4, clump of polyps, natural size; 4 a, upper view of 

 tentacles ; 4 b, under view of the same. 



Feejee Islands. Exp. Exp. 



This species, apparently the Actinantha florida of Lesson, forms 

 large clumps, sometimes six inches through, and occurs in shallow 

 water, where it is often left uncovered by ebb tide. When fully 

 expanded, the polyps are large and prominent; but they contract to 

 half the full size when taken from the water, and are slow to expand 

 again when returned to it. This fact will account for the bad figures 

 published of some species of this genus. The very short papillae and 

 broader tentacles, distinguish this species from the umbellata. In an 

 under view of the tentacles, the outer papillae are seen to form a regu- 

 lar series, and their length is hardly twice their breadth. 



Actinantha, florida, Lesson, Voy. de la Coquille, pi. 1, fig. 3. 



Cornulariaflffridea, Blainville, Man., 499. 



The Cornularia subviridis, variet., Quoy and Gaymard, Voy. de 1'Ast., iv. 266, pi. 

 22, figs. 5-7, may be the above species ; but both these, and the other figures and de- 

 scriptions (pi. 22, figs. 1-4 and 8-10), are too imperfect to be recognised. 



5. XENIA ELONGATA. (Dana.} 



X. lobata, fuscescens, polypis expansis 8-9'" latis, l-l" salientibus ; 

 tentaculis angusto-oblongis, limbo pallido, intervallo superno fimbria 

 paulo angustiore ; papillis brunneis 3-4-sma^X confertis, tenui-elon- 

 gatis, in serie externo 20-24. 



Lobate, brownish; polyp-stars 8 to 9 lines broad, 1 to 1J inches 

 salient; tentacles narrow oblong; limb pale, the interval above 



