ANNELIDA. 343 



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

 must belong to the genus Clepslna 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 Lumhricus terres- 

 tris of Linnaeus is classed here. 



Of the CHETOPODA^ or Annelida with bristly legs, the fol- 

 lowing have been recognised : 



ApHRODITA ACULEA'tA, Lin. Halithea aculeata, Sav. ; Aud. and 

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



PoLY'noE SQUAMaVa, Aud. and Edw. ; ibid., pi. 7, f. 10-16. 



Ne'reiS MARGARITa'ceA, Leach. Lycoris margaritacea, Lam. 



PhylLO'dOCE Vi'RIDIS, Johnston; ^nn. of JVat. Hist., iv. 228, pi. 6, 

 f. 11 - 15. Nereis viridis, Lin. 



PhyLLO'doCE LAMELLI'geRA, Johnston; liirf., pi. 6, f. 1-6. 



The sedentary Annelida have been already mentioned among 

 the Testacea, page 7. 



