MANUAL OF ZOOLOGY. 



form a single mass, technically called the " cephalothorax." 

 The so-called "tail," on the other hand, is truly the "abdo- 

 men." The various appendages of the animal are arranged 



Fig. 136. The common Lobster (Homarus vulgaris), viewed from below, a The lesser 

 antennae ; a' The greater antennae ; n The last pair of foot-jaws ; c The great claws, 

 or first pair of legs; d e f g The last four pairs of walking legs; ft i j k I in 

 The six pairs of abdominal appendages, the last five being " swimmerets," and 

 the last of all being greatly expanded ; t The last segment of the body, without 

 appendages. 



along the lower surface of the body, and consist of -the feelers, 

 jaws, claws, legs, &c. The entire body, with the articulated 



