Biological Bulletin · 1924 · 49 citations · 0 references
Life SciencesDevelopmental BiologyEntomologyEmbryogenesisMorphogenesisOrganogenesisEye DevelopmentInsect Nervous System AnatomyOcular DevelopmentOcular MorphogenesisPupal DevelopmentVisual SystemCompound Eye AnatomyGanglia AnatomyLarval OntogenyOcular OrganogenesisOptic TractPupal Nervous System
1. The cell groups, representing the primordia of the ommatidia of the compound eye of Drosophila melanogaster, have been found in the four-day larva. 2. The fusion of the imaginal disks and the supra-esophageal ganglia take place on the third day of larval life. 3. There is a correlation between the development of the nervous system and the dioptric apparatus, as shown by the reduction in the size of the optic tract in the bar-eyed mutant.