Zt-— ^ ^ 



Fid. 5. — AMaciix flKi-'uifiVix. — A male specimen, with the roof of the 

 . carapace and the terga of the abdominal somites removed to show 

 the viscera (nat. size) : — aa, antennary artery ; at/, anterior gastric 

 muscles ; (fiim, adductor muscles of the mandibles: rs, cardiac 

 portion' of the stomach ; 17//, green glands ; //, heart ; lig, hind gut, 

 or large intestine ; Lr, liver ; oa, ophthalmic artery ; pg, posterior 

 gastric muscles ; ffl", superior abdominal artery ; /, testis ; rd, vas 

 deferens. 



