Abstract
The cytochemical studies of vitellogenesis in Oxya velox establish the following facts:
1. The Golgi bodies are clearly involved in the formation of fatty yolk which, however, consists predominantly of triglycerides with traces of phospholipids.
2. The compound yolk originates from the follicular epithelium and is composed of carbohydrates (1:2 glycol group and glycogen) and different groups of protein.
