SUMMARYThe morphology of the alimentary and reproductive organs ofL. discicollis(Coleoptera: Lampyridae) was studied in detail. The alimentary canal possesses a pouch‐like proventriculus. It is suggested that this structure was once functional in ancestral Lampyridae. The details of the reproductive organs are given and it appears that they might be of value in determining the inter‐relationships of the families included in the superfamily Cantharoidea. Male and female specimens ofL. discicollishave been found to exhibit sexual dimorphism particularly marked in respect of the gut and the size of the e