52 



TESTACELLID.E. 



placed at the right side of the head, while the other 

 parts are situated at the posterior extremity of the 

 body ; they are nevertheless connected by a long 

 slender duct buried in the muscles at the side of the 

 foot ; the vent is distinct from the lung." Hancock. 



Sub-order II. GEOPHILA. 



Eyes at the apex of elongated cylindrical pe- 

 duncles; tentacles cylindrical, shorter, and lower 

 down than the eye peduncle, sometimes very small 

 or wanting; the two orifices of the organs of ge- 

 neration confounded in the same external orifice ; 

 operculum none. Terrestrial. 



Sub-division 1. Lumbricivora. Mouth proboscis- 

 shaped; jaws none; teeth numerous, slender, 

 conical, pinlike, distant (fig. 14.) ; head, tentacles, 

 Fig. 14. 



Teeth of Testacellus haliotideus. 



and eye peduncle retractile under the skin. Car- 

 nivorous, worm-eating. 



Fam. 2. TESTACELLID^E. 



Foot without any subcaudal gland ; teeth slender ; 



