622 



EXPLANATION OF PLATES. 



k, i,j, k, I, gizzard. 



h, upper muscle. 



i,j, lateral muscles. 



k, lower muscle. 



/, tendon. 



m, w, o, duodenal fold of intestine. 



p, q, r, continuation of intestine. 



Fig. 2. Section of Proventriculus. 



Fig. 3. Stomach and Proventriculus of 

 another individual, seen from behind. 



g, proventriculus. 



h, upper muscle of gizzard. 



i,j, lateral muscles. 



k, lower muscle. 



/, tendon. 



m, commencement of intestine. 



Fig. 4. Terminal portion of Intestine, 



and Coeca. 

 a, b, intestine, 

 c, d, coeca. 



Alimentary Canal of Tame 

 Pigeon. 



Fig. 5. 



a, bill. 



b, head. 



b, c, d, e, crop, of extreme size, and 

 commencing at the fauces. 



f, continuation of oesophagus. 



g, proventriculus. 

 h, i,j, k, I, gizzard. 

 h, upper muscle. 



i, j, lateral muscles. 



k, lower muscle. 



I, tendon. 



rn, n, o, p, q, r, intestine. 



Fig. 6. Inyier surface of Crop. 



Fig. 7. Terminal portion of Intestine 



a, b, intestine, 

 e, d, coeca. 



Plate VIII. Digestive Organs of Huskers, Deglubitores, 



Fig. 1. Alimentary Canal of the House 

 Sparroiv, Passer domesticus. 



a, the bill. 



b, crop, unilateral. 

 a, c, d, oesophagus. 

 d, proventriculus. 

 «>/» 9y gizzard. 

 €,f, lateral muscles. 

 g, lower muscle. 



h, ifj, k, I, m, n, intestine. 

 /, coeca. 



Fig. 2. Alimentary Canal of the Corn 

 Bunting, Emberiza Miliaria. 



a, b, c, d, oesophagus. 



b, crop, or dilatation of oesophagus. 



d, proventriculus. 

 <?» /. ff> gizzard. 

 e,f, lateral muscles. 

 g, lower muscle. 



h, i,j, k, I, m, n, intestine. 

 I, coeca. 



Fig. 3. Alimentary Canal of the Green 

 Linnet, Fringilla Chloris. 



a, the bill. 



a, b, c, d, oesoijhagu?. 



b, crop. 



e, f g, gizzard. 



e, f, lateral muscles. 



g, lower muscle. 



h, i,j, k, I, m, n, intestine. 



/, coeca. 



