ANNELIDA. 343 



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

 must belong to the genus Clepslna of Savigny. 



PHYLLI X NE HIPPOGLO'SSI, LAM.; An. sans Vert., v. 526. Encyc. 

 .Mcth., pi. 52, f. 11 - 14. Hirudo hippoglossi, MULL. 



Always found on the bodies of the Halibut (Hippoglfasus vul- 

 garis.) 



The EARTH-WORM, which is probably the L&mbricus terres- 

 tris of Linnaeus is classed here. 



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

 lowing have been recognised : 



APHRODI N TA ACULEA'TA, LIN. Halithea aculeata, SAV. ; AUD. and 

 EDW. ; Ann. des Sc. JVai., xxvii. pi. 8, f. 7. 



POLY'NOE SQUAMA'TA, AUD. and EDW. ; ibid., pi. 7, f. 10-16. 



NE V REIS MARGARITA'CEA, LKACH. Lycoris margaritacea, LAM. 



PHYLLO'DOCE-VI'RIDIS, JOHNSTON; Ann. of Nat. Hist., iv. 228, pi. 6, 

 f.11-15. Nereis viridis, LIN. 



PHYLLO'DOCE LAMELLI'GERA, JOHNSTON ; ibid., pi. 6, f. 1-6. 



The sedentary Annelida have been already mentioned among 

 the Testacea, page 7. 



