ANNELIDA. 343 



young adhering to an orifice at the middle of the belly. This 

 must belong to the genus Clepsina of Savigny. 



PhYLLi'ne HIPPOGLo'ssi, Lam.; ^n. sans Vert, v. 526. Encyc. 

 Mith., pi. 52, f. 11 - 14. Hirudo hippoglossi, Mull. 



Always found on the bodies of the Halibut {Hippoglossus vul- 

 garis.) 



The Earth-Worm, which is probably the Lumbricus terres- 

 tris of Linnaeus is classed here. 



Of the CHETOPODJl, or Annelida with bristly legs, the fol- 

 lowing have been recognised : 



ApHRODi'ta ACULEa'tA, Lin. Halithea aculeata, Sav. ; Aud. and 

 Edw. ; Ann. des Sc. JVat., xxvii. pi. 8, f. 7. 



PoLy'noE SQUAMA'ta, Aud. and Edw.; i7»(</., pi. 7, f. 10-16. 



Ne'reIS MARGARITA CEA, Leach. Lycoris margaritacea, Lam. 



PhylLo'dOCE VI'riDIS, Johnston; Ann. of Kat. Hist., iv. 228, pi. 6, 

 f. 11 - 15. Nereis vlridis, Lin. 



PhYLLo'dOCE LAMELLI'gERA, Johnston ; i6i<f., pi. G, f. 1-6. 



The sedentary Annelida have been already mentioned among 

 the Testacea, page 7. 



