204 Journal of Comparative Neurology. 



bly of other efferent fibers, but the exact course of the connec- 

 tion and the number of cellular elements composing it remains 

 to be demonstrated. 



The central body is plainly shown to be connected with the 

 fibrillar arch, and possibly the ocellar glomerulae, and probably 

 through these also with the nerves of the ocelli. Further it is 

 connected with the fibrillar mass in front, and with that below 

 it, but it does not appear to be connected with the mushroom 

 bodies unless it be with their roots. It receives its fibers 

 from cells situated above and behind it, and from some above 

 the antennal lobes. 



The olfactory glomerulse so called, are shown to be formed 

 by the tuft-like terminals of the fibers composing the antennal 

 morulae, and in these the terminals of the fibers of the antenno- 

 cerebral tracts seem to play the most prominent role. 



Several tracts of fibers from the optic lobes connect the 

 latter with other parts of the brain than the mushroom bodies, 

 and some of them doubtless form a part of an optic reflex 

 tract with fibers from the ventro-cerebron and the ventral cord. 



Such reflex tracts are not evident in connection with the 

 antennal lobes, but the positions of fiber fragments seen indi- 

 cate the possibility of reflex connections here also. 



Some of the fibers from the ocellar nerves terminate in the 

 tubercles of the central body, others in the ocellar glomerulae. 

 Some also may connect with the fibrillar arch. Some of the 

 large fibers pass downward and become the enormous fibers of 

 the dorsal surface of the ventral cord. 



A tract of fibers, probably a continuation of what Binet 

 calls the ventral column of the ventral cord, passes upward 

 through the commissures and comes into connection above the 

 oesophageal foramen with a dorso ventral tract to the calices of 

 the mushroom bodies. 



A tract from the cord that is probably a branch of the 

 ventral column passes forward to the posterior part of the an- 

 tennal lobes giving off fibers on their branches along the way 

 among the terminations of the fibers passing into the oral and 

 the antenno-motor nerves. 



