622 ZOOPHYTES. 



lows: "A. carnosum, crasse pediculalum, arborcum, violaceo-vlrescens ; ramis expla- 

 natis, polypis paniculatis; lentaculis octonis, apice obtusis, virescentibus." It is probable 

 that the granulations described are only the half-contracted polyps, as the same appear- 

 ance (not well represented in the figure) has been seen by the author in the above and 

 other species. The branches in the figure are larger and more ramose, but of the same 

 thickness as in the confertum. 



16. ALCYONIUM RIGIDUM. (Dana.} 



A. rigidum, effusum, incrustans, subexplanatum, ramis s&pius simplici- 

 bus, breviter digitiformibus, viz 1" longis et 2-4'" crassis, obtusis, 

 interdum valde remotis. 



Rigid, spreading, incrustirig and subexplanate ; branches usually 

 simple, short digitiform, scarcely 1 inch long, and 2 to 4 lines thick, 

 obtuse, frequently very remote. 



Plate 58, fig. 2, the unexpanded zoophyte, natural size. 



Feejee Islands, at Mathuata, Venua Lebu. Exp. Exp. 



This stiff and rigid species forms flat or convex incrustations, with 

 scattered digitiform branches, hardly an inch long, often separated by 

 bare intervals of considerable width. 



17. ALCYONIUM MURALE. (Dana.} 



A. rigidum, coriaceum, crassum, effusum, ramis simplicibus, subremotis, 

 crasse laminatis, erectis, scepe 2" longis, J-l" altis et " crassis, 

 interdum sinuosis ; polypis creberrimis, virentibus. 



Rigid coriaceous, stout, spreading, branches simple, subrernote, stout 

 lamellar, erect, often 2 inches long, \ to 1 high, and ^ of an inch 

 thick, sometimes sinuous; polyps much crowded, green. 



Plate 58, fig. 3, the zoophyte unexpanded, natural size. 



Tongatabu. Exp. Exp. 



The narrow elevations of a rigid texture, which stand over the 

 surface, are peculiar. The species has something of the habit of the 

 rigidum, but not its short subterete digitiform branches. The pedicel 



