Introduction to Animal Morphology. 



side a mandible, which, with its fellow of the opposite 

 side, forms the front pair of jaws; each usually 

 bears externally a several-jointed palp, only absent 

 in terrestrial and parasitic forms ; the next segments 

 bear maxillae or hinder jaws, and one or more of the 



Fig. 35- 



Limbs of Pandalus Jeffreys!! : a, a, ripht and left 2nd pair of pereiopoda ; b, outer 

 antenna; d, inner antenna; c, jrd pereiopod; e, telson; f, pleopod; -, gnathopod. 



following or thoracic appendages are also specialized 

 for the purpose of chewing. 



The limbs behind this in lower forms consist of a 

 basal process (proto-poditc\ to which is appended an 

 outer [exo-podifc], and an inner (cnJo-fruti/c) process, 

 ttter sometimes represented by tufts of bristles : 

 in tin- hivrln-r forms tin- protopodit'- is li-n^'ihciiod, and 

 divided into parts corresponding to thns.- in the base 

 of the ai; ibove v^m-n, and t.-rminatrd by two 



joint the riiiLV'd <-nd of tin' .intmna 



(pro- and 



Tln mouth is srentral, often displaced a little back- 



