130 PHYSIOLOGICAL SERIES. 



D. 157. Three transverse sections through the fore-brain of a 

 Ki-wi (Aptery.r) in front of the foramen of Monro. The 

 uppermost section is taken close behind the olfactory bulbs; 

 the middle one slightly in front of the lamina terminalis, 

 and the lower through the anterior commissure. They 

 show the relatively immense development of the corpora 

 striata and the extreme thinness of the median walls of the 

 hemispheres. The termination of the anterior commissure 

 in the corpora striata and its relation to the anterior 

 extremity of the third ventricle are also well displayed. 



0. 0. 1321 Q. 

 ANSEBIFOBMES. 



D. 158. The head of a Wattled Brush-Turkey ( Catheturus latharni) 

 with the brain exposed from above. The cerebral hemi- 

 spheres are slightly longer and more sharply pointed in 

 front than in the preceding specimens. They show clearly 

 the longitudinal dorsal furrows meeting in the mid-line 

 close behind the olfactory bulbs. The small clavate epi- 

 phvsis can be seen wedged in between the anterior end of 

 the cerebellum and the cerebral hemispheres. 



O. C. 1321 o. 



D. 159. The brain of a Honduras Turkey (Meleagris ocellata) 

 showing the small size and rounded form of the hemispheres. 

 The longitudinal dorsal furrows are conspicuous at their 

 anterior end. The cerebellum is well developed. 



0. C. 1321 D. 



D. 160. The brain of a Fowl ( Gallus ferrugineus v. domesliciis). 

 The hemispheres have much the same proportions as in 

 ( dtlwturuS) but do not extend so far back. The olfaetorv 

 bulbs are clearly shown. The cerebellum has well marked 

 flocculi. In this specimen also the strong ventral conv -\\\\ 

 of the medulla, oharaet eristic of Birds and Reptiles, and 

 the large size of the optic lobes, tracts and nerves are 

 well marked. The hypophysis ha- been removed, exposing 

 the open end of the infundibulum. 



Presented by W. B. Tegetmeier, Esq. 



D. 161. A sagittal section of the head and brain of a Polish Fowl 

 ( Gallus ferrugineus v. domesticus), showing the modified 

 form of the brain correlated with the cranial protuberance 



