642 
Measurements are in 
R. M. STRONG 
TABLE 1 
millimeters. 
Unless otherwise stated in the column headed 
remarks, the olfactory lobes and nerves do not vary significantly tn their size, form 
and arrangement from those of the doves and the gallinaceous birds. 
which appear in plates 1 and 2 have not been included here. 
The species 
REMARKS 
Lobes rather large and resem- 
bling those of Dromaeus 
slightly. Turbinals elaborate 
Olfactory lobes long 
Olfactory lobes long as in duck 
See next page. 
Nerves very close together 
| OLFACTORY NERVE CEREBRUM 
SPECIES | us| s _ ra 
PMs aah ae 
Rhea americana.... 9.0+ 0.7 19.5 | 34.0 
Crax carunculata...| 11.5 | 1.15 20.0 | 29.0 
Lyrurus tetrix...... PLZ OR O85 14.0 23.0 | 
Perdix perdix....... 8.0 0.4 WAS 
Gallus gallus....... 12.0 | 0.7X1.0) 14.0 | 22.5 
Columbia livia. ....) 10.0 | 0.6 75 12710722050 
Goura coronata..... | 14.0 0.8 16.5 | 28.0 
Hulicaatrde.ceek ee HO | 10) VEO! | 2200 
Anous stolidus Sep Osoy<Ondisso | beet 
Larus ribidundus ..| 8.0 | 0.7 12} (0) | PEO 
Belanopterus  cay- 
CHNENSIS seas 11.0 0.4 1254-2050 
Scolopax rusticola.. 12.2 0.8 15.0 | 20.0 
Anthropoides virgo.| 0.8 0.1 19.0 | 30.5 
Eurypyga helias..... 9.0 | 0.4X0.8} 12.5 | 19.2 
Theristicus melan- 
ODSIS 4h eres tacks 9.0); 1:0 22.5 4) 3020 
Platalea leucorodia. 8.0 12.0 Zino at 10 
| 
| 
Tigrisoma brasil- | 
JENSeHe eto eee ia.5.) gee 18.0 | 29.0 
Nyeticorax cyano-| 
ceplalussssssceee TEE (0) |e EO) 19.0 | 29.0 
Ansen <ansenercienee ) 7201) eS 33.0 | 56.0 
Anas boseas........ Pag | ae 20.0 | 26.0 
Phalacrocorax zZ 
carbone see Oras 120 2520) | 2929 
Plotus anhinga 
Sula bassana .... ..| 17.0 | 0.7X1.2) 24.5 | 
| 
throughout 
Lobes relatively small 
Lobes small and between an- 
terior ends of hemispheres; 
ophthalmic branch of tri- 
geminus very large 
Lobes long 
Lobes long 
Nerves relatively small 
Lobes relatively small 
_ Lobes have peculiar ventral 
position 
