334 FUNCTIONS AND INSTINCTS. 



boscis that can be protruded, generally armed 

 with maxillae. 



2. The second he names Serpuleans, these add 

 to the legs of the former retractile bristles, with 

 claws ; they have no head furnished with eyes 

 and antennae, and no proboscis. 1 



3. The third he names Lumbricinans ; these 

 have no projecting legs ; but are furnished with 

 bristles seldom retractile ; they have no head 

 with eyes and antennae, and no maxillae. 



4. His fourth Order he names Hirudineans. 

 They have a prehensile cavity, or sucker, at 

 each extremity, and eyes. 2 



5. In his ffth Order he intends to compre- 

 hend those Annelidans that have neither bristles 

 nor prehensile cavities, but his account of this 

 has not been published. 



He begins with the most perfect of the Anne- 

 lidans, but viewing them in connection with the 

 worms I must reverse the order, and instead 

 of descending ascend, which will bring me 

 ultimately into connection with the more dis- 

 tinctly jointed animals the Condylopes. 



1 . The Order of Hirudineans includes animals 

 that are of the first importance, as well as some 

 that are fearfully annoying, to mankind. The 

 common leech 3 has long been so much in request 



1 SerpulecK. 2 Lumbricince and Hirndinece. 



3 Hirudo medicinalis, L. (Sanyuisuga, Sav.) 



