Brues, on sleeping habits of Priononyx atrata, [118].
Cerceris clypeata, [147];
locality study, [149];
experiments on stinging habits, [151].
—— deserta, [152];
locality study, [153].
—— fumipennis, [142].
—— nigrescens, [142].
Ceropales, following Pompilus scelestus, [231].
Chlorion cœruleum, [256].