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Transmitted February 2, 1960.

28-2493

Transcriber's Notes

"Rijkmuseum van Natuurlijke Histoire" changed to "Rijksmuseum van Natuurlijke Historie" (Rijksmuseum van Natuurlijke Historie, Leiden)

Period changed to comma (ErpÉtologie gÉnÉrale, vol. 7, p. 268)

"Chipas" changed to "Chiapas" (Guatemalan highlands and probably highlands of Chiapas.)

The style of the majority of citations in this paper are of the form "(year: page)". A small number of citations been ammended to include the space following the colon.