iUBORDER ALCYONARIA. 679 



2. MOPSEA ENCRINULA. (Lamarck.) Ehrenberg. 



M. subbipinnato-ramosa, ramulis filiformibus, verrucosis, verrucis sparsis 

 ascendentibus, interdum vertidllatis. 



Ramose, subbipinnatej branchlets filiform, verrucose ; verrucee scat- 

 tered, ascending, sometimes verticillate. 



Seas of New Holland. Peron $ Lesueur. 



Isis encrinula, Lamk., ii. 476, No. 4. , Deslongchamps, Encyc., 557. 



Isis dichotoma, Schweig., Handb., 434. Mopsea encrinula, Ehrenberg, G. Ixxvii., 

 Mopsca verticillata, Lamouroux, Pol. flex., sp. 2. 

 467, pi. 18, fig. 2 ; and Exp. Meth., 39. 



3. MOPSEA GRACILIS. (Lamouroux.} Ehrenberg. 



M. basi ezplanata, laciniata, caulium nodis cakareis paulum crassis, 

 ramorum dongatis, transluddis, Icevibus, albis. 



Explanate at base, laciniate ; calcareous joints of stem a little stout, 

 those of the branches very long, translucent, smooth, white. 



The Antillas. Lamouroux. 



Isi.s gracilis, Lamour., Polyp, flex., 477, , Lamk., 2d ed., ii. 476, No, 6. 



pi. 18, fig. 1. , Blainviile, Man., 503. 



, Deslongchamps, Encyc., 466. 



4. MOPSEA ERYTHR^EA. (H. 4- Ehrenberg.) 



M. dichotoma, fruticulosa, verrucosa, coccinea; articulis cortice obductis, 

 geniculo vix angustioribus, ramis in geniculis flexilibus ; decorticatd, 

 articulorum lapideorum axe teretiusculo, kngitudinaliter sulcato, geni- 

 culis paulum tumidis ; tentaculis ramulosis, niveis. 



Dichotomous, fruticulose, verrucose, scarlet ; joints concealed by the 

 cortex ; scarcely narrower at the geniculations ; branches flexible 

 at the geniculations; calcareous joints of the axis somewhat terete, 



