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Why are there good and poor mimics
TLDR
Six hypotheses are presented to explain the occurrence of so many poor mimics, and a theoretical model is outlined which shows how a poor general mimic can have a larger population than a good, specific mimic.
Protective mechanisms in the Eolidacea (Mollusca Nudibranchia)
TLDR
It is probable that the most important function of the cerata is that of protecting the eolid against predation, and probably in all eolids.
Defensive behaviour in Ghanaian praying mantids
TLDR
The defensive behaviour of 25 species of praying mantids from Ghana is described and a curious “boxing display” is described, used as taxonomic evidence for the close relationship of these three genera.
Opisthobranchiate Mollusca from Ghana: Chromodorididae
TLDR
Eight species of Doridoidea belonging to the family Goniodorididae from Ghana, West Africa are described, including Okenia africana n.
Opisthobranchiate Mollusca from Tanzania (Suborder: Doridacea)
TLDR
Twenty-two species of Doridacea are described from the vicinity of Dar es Salaam, Tanzania, indicating that many species of dorid occur throughout the Indian Ocean and the Pacific as far as Hawaii.
The defensive behaviour of Ghanaian praying mantids with a discussion of territoriality
TLDR
The defensive behaviour of 18 species of mantids is described and further details are given of the defences of 12 species whose behaviour was described earlier (Edmunds, 1972), and evidence is presented which suggests that wing reduction in females results in decreased predation by birds.
Similarity in flight behaviour between the honeybee Apis mellifera (Hymenoptera: apidae) and its presumed mimic, the dronefly Eristalis tenax (Diptera: syrphidae).
TLDR
Investigating aspects of the flight behaviour of the dronefly Eristalis tenax, Apis mellifera and two other flies, Syrphus ribesii and a Musca sp.
The survival value of countershading with wild birds as predators
TLDR
Experiments were carried out on garden lawns in England in which four types of green pastry prey were exposed to predation by wild birds, demonstrating the survival value of countershading.
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