Long, branching hairs on the crown of the head stand thick like a miniature forest, so that an ocellus is scarcely discernible except from a particular point of view; and then the observer remarks an opening through the hairs--a cleared pathway, as it were, in such a forest--and notes that the ocellus, looking like a glittering globe half immersed in the substance of the head, lies at the inner end of the path. The opening connected with the front ocellus expands forward from it like a funnel, with an angle of about fifteen degrees. The side ocelli have paths more narrow, but opening more vertically; so that the two together command a field which, though hedged in anteriorly and posteriorly, embraces, in a plane transverse, of course, to the axis of the insect’s body, an arc of nearly one hundred and eighty degrees. These paths through the hairs appear to me to be indications that the ocelli are intended for distant vision, although the opinion that near vision is their function is held by eminent opticians. The ocelli are nearly hemispherical, and the diameter of each is about fifteen times that of a facet of the compound eye. Such a form of lens would, I will concede, indicate for these organs a short focus, and hence, a fitness for near vision. But if the ocelli are intended for near objects, it is difficult to understand why they are surrounded by a growth of hair so dense as to permit unobstructed vision only in a very narrow field, and why they are so placed on the top of the head as to be debarred from seeing any objects in the neighborhood of the mandibles and the proboscis, the ability to see which objects would appear to be very necessary in the constant and delicate labors of the worker honey-bee among the flowers. Dr. Zabriskie exhibited the head of the worker honey-bee for the purpose of illustrating the above remarks. At the conclusion of his observations, he added: “Besides the worker honey-bee, I have brought for exhibition the drone and the queen of the same species, and the queen-cells; the queen of _Bombus Virginicus_, one of our native humble-bees; the _Melissodes binotata_, male and female; the _Melissodes pruinosa_, both sexes; the beautiful _Anthophora dispar_, male and female of Tunis, Africa; and the celebrated little stingless bee of Abyssinia, the _Trigona Beccarii_, which lives in immense colonies, and stores large quantities of honey. The _Anthophora dispar_ has a very long proboscis. The possession of such a proboscis by our own bees would add millions of dollars annually to the wealth of the United States.” _CANADIAN DEPARTMENT._ R. F. HOLTERMAN, EDITOR.