96 



ANNELIDA. 



Tribe II. Mesobranchia. 



Trunk with no gills, distinct head, eyes, 

 antennoe, or jaws Terricolana. 



Trunk with gills; head small, or indis- 

 tinct ; no jaws nor antennae ; and generally 

 no tentacular cirri Arenicolana. 



Trunk furnished with a distinct head, 

 with antennae and eyes, and generally with 

 an evertile proboscis armed with jaws . . Cep/ialana. 



Sub-Tribe I. Terricolana. 



Lumbricus (Linn.). Body round, pointed at 

 each end, with a distinct thickening at one part ; 

 four pencils of bristles on each segment, and no 

 long brushes in front. 



L. lineatus. 



capitatus. Fig. 153 ; n. s. and head mag. 



minutus. 



rufescens. 



154 



155 



153 



