DR. BAIRD ON SEVERAL GENERA OF EUNICEA. 345 



Feet : — Simple setse long, lanceolate, finely toothed or serrated 

 on the inner margins and acutely pointed. Compound setse long 

 but rather shorter than the simple setae; falciform appendages 

 witli two small teeth, one a little below the apex, the other a 

 little lower down. Spines or aciculse three in number, all straight 

 and blunt-pointed. Neither pectinate setae nor uncini were 

 visible. 



Hab. Madeira. 



This species approaches so closely to the E. adriatica of Schmarda 

 that I can scarcely separate the two. The only marked differences 

 are the structure of the compound setae and the habitat. In adri- 

 atica the falciform appendage is, as it were, forcipate or bifid at the 

 apex, whereas in this species {piadeirensis) it is as in most of the 

 other known species, bidentate, one tooth just below the apex, 

 the other lower down. In both species the pectinate setae and 

 uncini appear to be absent. 



II. Species in ivhich the uncini are only curved at the extremity, 

 not forcipate or hooked. ? = Leodoce, Savigny, as restricted. 



Sp. 4. Eunice noryegica. 



Nereis norvegica, Linnceus, Syst. Nat. 12th edit. p. 1086. 



Nereis pennata, Muller, Zool. Dan. i. 30, tab. 29. figs. 4-7. 



Nereis pinnata, Muller, I. c. tab. 29. figs. 1-3. 



Eunice norvegica, Cuvier, Kegn. Anim. iii. 100; And. 8f M.-Edwards; 

 Grube et auctor. var. 



Leodoce norvvegica, Savigny, Syst. des Annelides, p. 51 ; Lamk. An. s. 

 Vert. 2nd edit. torn. v. p. 5G2. 



Leodoce norvegica, Malmgren, Ann. Polychceta Spetsberg. Sfc. p. 64. 



Nereidonta norvegica, Blainville, Diet, des Sc. Nat. art. Vers. 



Nereidonta pinnata, Blainville, I. c. 



Eunice norwegica, Quatrefages, Hist, des Anneles, i. 324. 



Eunice pinnata, Quatrefages, I. c. 325. 



In this species the simple setae, the pectinate setse, and the com- 

 pound setae are present. The spines or aciculae are two in num- 

 ber ; and there is only one uncinus or booklet. This is shorter 

 than the spines, more slender, more sharply pointed, and curved 

 but not forcipate at the apex. 



Hab. Our specimens are from Bohuslan, Sweden. 



Sp. 5. Eunice tentaculata. 



Eunice tentaculata, Valenc. MS.; Quatrefages, Hist. Ann. i. 31/. 

 Not Eunice tentaculata, Kinberg, Fregatt. Eugen. Resa, tab. 15. f. 13. 



