Ed Southwick (c/o Bruce Cady) Concerning the references on bee ocellar function, I would also addition to the complete list provided by C.P. Milne the following; - "Motion Sensitivity Descending Interneurons, Ocellar LD Neurons and Neck Motoneurons in the Bee: A Neural Substrate for Visual Course Control in Apis mellifera"; in <<Neurobiology & Behavior of Honeybees>>, (Menzel & Mercer eds.) Springer Verlag 1987, pp 158-171. - "The Ocellar System of the Honeybee"; in <<Neurobiology & Behavior of Honeybees>>. J.J. Milde, (Menzel & Mercer eds.) Springer Verlag 1987, pp 191-200. - "Fine Structure of the dorsal ocellus of the worker honeybee". Toh & Kubawara. J. Morphol 142, 285-306, 1974. - "Circadian change of compound eye sensitivity is not governed by the ocelli in honeybees", J.J. Milde. Exp. Biol. 44, 141-145, 1985. - "Organization and physiology of the insect dorsal ocellar system"; in <<Handbook of Sensory Physiology>> (Goodman, L.J.), Vol VII, 6C ed. H. Autrum, pp 201-286, Springer Verlag, 1981. In any case, it would be of great utility to contact Juergen J. Milde at: European Molecular Biology Laboratory Meyerhofstrasse 1, D-6900 Heidelberg, FRG Cheers, Martin Giurfa Lab. of Behavioural Physiology FCEyN - University of Buenos Aires 4o piso, Pab II-Cdad Universitaria CP 1428 Buenos Aires - ARGENTINA --- Insectos Sociales inssoc