THE SENSE OF SMELL IN BIRDS 643 
TABLE 1 (continued) 
OLFACTORY NERVE CEREBRUM 
SPECIES REMARKS 
Breadth 
qa 
50 
a 
o 
4 
| Diameter 
Rhamphastos  cuv-' 
fertet ers. ee 60.0.5 19.0 | 29.0 | Lobes small; nerves wide 
| apart; no external nares; 
nasal chamber very short 
Gecinus viridis..... hora") 0.3 19.0 23.0 Lobes very small 
Pelecanus rufescens Lobes small 
Circus aeruginosus. | 10.0 } 0.5X0.8) 18.5 | 32.0 
Accipiter nisus...... 9.5 | 0.6— 14.0 | 24.0 
Buteo buteo,....+.- 12.0 0.5X1.1) 19.0 35.0 Lobes small and short 
Bubo ignavus....... 0.8 21.0 41.5 Lobes nof studied successfully 
Wo) 
oS 
_ 
bo 
Or On 
2 Lobes and nerves very small 
3 14.0 20. Lobes small; nerves separated 
at post. ends. 
Garrulus glandarius 9.0 | 0.20.4) 27.5 25.5 Lobes minute and fused; olf. 
| nerves very slender 
Sylvia atricapilla.. 5. 
Sturnus vulgaris....| 5. 
Or or 
the olfactory lobes with the brain in Dromaeus. Such a condition 
was found in less conspicuous form in specimens of the order. 
Charadriiformes which were examined by the writer, and it also 
appears in a figure of the brain of the American woodcock, another 
member of this order, (Herrick, 793, pl. 26). The writer regrets 
that he has not had opportunity to study the Dromaeus material 
histologically to note the relations of the formatio bulbaris to the 
olfactory lobe proper. There was evidence obtained by dis- 
section that there is a comparatively rich inervation of the rela- 
tively complicated posterior turbinals, by olfactory fibers. The 
surface of the middle concha is also elaborate, as can be seen in 
the posterior portion which has been included in fig. 2, and it 
seems quite possible that the middle concha in Dromaeus also 
receives olfactory fibers. 
Though the relatively huge olfactory lobes of the fulmar have 
been described by Klinckowstrém, they were not adequately 
illustrated in the figure which accompanied his account, and the 
nasal chambers were not included. It has therefore seemed desir- 
