M) 



Fig. 208. 



Fni. 209. 



Fig. 208. — Alimentaky Caxal of Perch. 



Oe, oesophagus ; M, stomach ; t, cajcal process of latter ; P — P, short pyloric 



region ; Ap, pyloric cseca ; MI), small intestine ; SD, rectum ; A , anus. 



FiH 209. — Alimentary Canal and Appendages of Protoptems annectev,i. 

 (After W. N. Parker. ) 

 as, oesophagus; st, "stomach"; py.i; pj'loric valve; h.ent, bursa entiana 

 (anterior portion of intestine) ; sp. i; spiral valve ; re, rectum ; d, cloaca ; 

 rl.c, cloacal ciEcum ; r, vent; a.p, abdominal pore; ood, base of oviduct; 

 /,-.d, base of kidney duct; /r, liver; g.b, gall-bladder; h.d, hepatic ducts; 

 cy.d, cystic duct; b.d, common bile duct, and b.d^, its aperture into the 

 intestine; c.m.a, coeliaco-mesenterio artery ; m.a", ?».«■', mesenteric arteries ; 

 h.p.r, hepatic portal vein ; t:]i, spleen. The pancreas is not seen, as it is" 

 embedded in the walls of the "stomach" and anterior part of the intestine 

 on the dorsal and right side. 



