Introduction. 



Appendages of Tail. 



Tail Limbs (Abdominal Appendages). — Five pairs of Pleopods in females all 

 constructed alike with basal joint (propodite) and two swimming plates or 

 lashes (endopodite, exopodite) ; pleopods of first two pairs in males, modified 

 for sexual purposes, tip of first pair supplied with " coupling hooks " for 

 hanging spermatophores on females. Uropods or last tail limb (abdominal 

 appendages) with basal joint (propodite) and supporting two plates (endopodite 

 and exopodite), inner and outer branches making, together with telson and its 

 appendages, tail fan (tail flap or tail) 



