322 
JouRNAL OF CoMPARATIVE NEUROLOGY. 
LOBES OF FIBRILLAR SUBSTANCE 
FIBER 
Dorsal Lobe 
Inferior Dorsal Lobe 
Antennulary Lobe 
Tegumentary Lobe 
Antennary Lobe 
Pyriform Lobe 
Central Body 
Procerebral Bridge 
Olfactory Lobe 
Optic Lobe 
TRACTS AND Comusonnie : 
Fibers Related to the Optic Nerve 
Lower Optic Commissure 
Optic Chiasm or Upper Optic Gomaicanre, 
Dorso-lateral Optic Tract : 
Optico-mushroom Tract 
Optico-oesophageal Tract 
Optico-arch Tract 
Anterior Optic Tract 
Oculo-motor Commissure 
Oculo-motor Tract ; 
Fibers Related to the Aeenenites Nervé 
Antennulo-mesal Tract 
Major Antennulary Tract 
Antennulary Commissure 
Dorsal Antennulary Tract 
Minor Antennulary Tract 
Fibers Related to the Tegumentary Newes 
Major Tegumentary Tract 
Mesal Tegumentary Tract 
Minor Tegumentary Tract 
Tracts Related to the Antennary Name 
Antennary Commissure 
Major Antennary Tract 
Minor Antennary Tract 
Antenno-mushroom Tract 
Optico-olfactory Commissure ~ 
MusHRoomM BODIES 
Stalks of the Mushroom- bodies 
Roots of the Mushroom-bodies ; 
Minute Structure of the Mushroom Nidi : 
Table Comparing the Mushroom-bodies of Insects, Ciayish 
and Worms 5 ; . 
Conclusions 
BIBLIOGRAPHY 
DESCRIPTION OF PLATES 
345 
346 
346 - 
346 
346 
346 
346 
347 
349 
350 
350 
351 
351 
351 
352 
353 
S55 
353 
354 
354 
354 
354 
355 
355 
355 
355 
355 
355 
355 
355 
355 
356 
356 
356 
356 
356 
356 
356 
356 
357 
357 
358 
358 
359 
360 
366 
