CnUSTACEA. 



75 



s m 



Fig. 47.— Anatomy of Ck.vb. 



Tie;. 47.— p, Part of the lining membrane of tlie shell.— A, Tlio heart — 

 0, Arteries.— 6, Branchiae in their natural position.— 6', Branchiae turned back 

 to show their vessels. — s. Stomach.— m. Muscles of stomach.— 7, Liver. 



Fig. 48.— ClBCDXATOBT APPARA'TCS OP LOBSTES. 



Ftp. 48.— A, Heart- jr, g, SInns or dilated vein receiving the Wood which 

 comes from different parts of the body, and is tlicnce sent to the branchix ^ 

 from which it returns to the heart by itie bronclUal velus, v. ' 



