DR. BAIRD ON SEVERAL GENERA OF EUNICEA. 345 



Feet : — Simple setg3 long, lanceolate, finely toothed or serrated 

 on tlie inner margins and acutely pointed. Compound setae long, 

 but rather shorter than the simple setae; falciform appendages 

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

 little lower down. Spines or aciculae 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 (madeirensis) 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 which the uncini are only curved at the extremity, 

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



Sp. 4. Eunice norvegioa. 



Nereis norvegioa, hinnmus, Syst. Nat. 12th edit. p. 1086. 



Nereis pennata, Miiller, ZooL Dan. i. 30, tab. 29. figs. 4-7. 



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



Eunice norvegica, Cuvier, R^gn. Anim. iii. 100; Aud. ^ M.-Edwards ; 

 Grube et auctor. var. 



Leodoce norwegica, Savigny, Syst. des Ann^lides, p. 51 ; Lamk. An. s. 

 Vert. 2nd edit. torn. v. p. 562. 



Leodoce norvegica, Malmgren, Ann. Polychwta Spetsberg. 8fc. p. G4. 



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 setae, 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 Bolmslan, 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. 



