1. Described in Proc. Linn. Soc. for Mar. 6, 1930: "In the Canopy of the Forest", by Major R. W. G. Hingston .
2. Quart. Jour. Micr. Sci., 67, p. 293; 1923.
3. Proc. Linn. Soc. for Feb. 6, 1930.
4. "Origin of Species" (First Edition), p. 366.
5. Loc. cit. p. 40.