Zt^— 



Fig. 5. — Astaetis JtiiviatUis. — A male specimen, with the roof of the 

 carapace and the terga of the ahdominal somites removed to show 

 the viscera (nat. size) : — aa,, anteunary artery ; ag, anterior gaatric 

 muscles ; amm., adductor muscles of the mandibles; cs, cardiac 

 portion of the stomach ; </)/, green glands ; h, heart ; hg, hind gut, 

 or large intestine ; I/7; liver ; oa, ophthalmic artery ; pg posterior 

 gastric muscles ; saa, superior abdominal artery ; t, testis ; nd, vas 

 deferens. 



