[1]. The Concise Natural History, p. 551.
[2]. In conjunction with Dr. Sandias, whose name must be understood as accompanying Grassi’s—for the most part—when the latter is referred to.
[3]. Quarterly Journal of Microscopical Science, vols. 39 and 40.
[4]. A nymph is the free-moving active equivalent of the chrysalis amongst moths and butterflies.
[5]. Nests built in chemical glass tubes and thus under close observation.
[6]. Chambers’s Encyclopædia.
[7]. Nature, March 23rd, 1893.
[8]. The Cambridge Natural History, vol. 6, p. 134.
[9]. Quarterly Journal of Microscopic Science, vols. 39 and 40.
[10]. Others call them inquilines.