PHYLOGENY OF THE PALZOGNATHA AND NEOGNATHA. 251 
The following table from Beddard [7] will give at a glance the known variations in 
the proportions of the alimentary canal :— 
| Small intestine. | Large intestine, Crea. | 
ft. ins. ff. ims. ft. ins. ft. ins. | 
Rhea macrorhyncha, Q ...-.-+1 eres 4 2 130) 1 4} Tye a 
a f GC eeao nee as 52 it “ali Byes) 
fa 1A Nan RR Pe A Ae 5 1 4 oto 
PREG WMET ACA) sil eiohe ecejaye tere rn se hea (8 es Oe: 2 9 
r - Oh 5o03. a | 8 Q ® 4 8 
a 5 (HONS) co cootesader 5 10 qo) 4 Oa 5G De 8 
Struthio camelus, Q ....+e.eer eee 8} Al a) 1) Bil fs) Oy will 
sf Let a A 23 «4 30. 8 2 103 
5 Ps © go nawtriee bine ga ob 23 (0 298 i 
E sd) Ee RA 24 6 31 8 Dake RV SHiNy. 
i emer Pak tere ah dass eh 233 0 24 9 1/10 
es <a hei foe a 33° 2 2 7 
Casuarius unappendiculatus, Q ...... | 3. (8 10 AL 5 
- casuarius beccarit, Q ...-.. 4 8 fl 0 43 
“F picticollis, S.......--++--- 4+ 0 10 4 
an bicarunculatus ......+0++-.! yy (0) nO) 7 
Bs (ian, @ seatiandooase se 3 103 113 3t 33 
Dromeus nove-hollandie ......-.++6+ I & i 5 
Apterya australis ......1. eee ee sees 44 43 7 
| ‘ GUE, Gonsnsscqenoveqosce | 38 43 4} 7 
Tue Liver. 
The liver, in all the Paleognathw, save Struthio, agrees with that of the 
Neognathw in that it is divided into two lobes. 
In Casuarius and Dromeus the right lobe is larger than the left. A Spigelian lobe 
is represented. 
Both Casuarius and Dromeus possess a gall-bladder. In the former the gall opens, 
in common with the pancreatic ducts, into a diverticulum on the distal loop of the 
duodenum. 
In Apteryx the left liver-lobe is larger than the right; the gall-bladder is occasion- 
ally absent. 
In Rhea the right and left liver-lobes are equal in size. ‘The gall-bladder is 
generally wanting. 
