In the January number, Prof. Slingerland proposes a new common name for the “forest tent-caterpillar,” and proposes “forest tentless-caterpillar.” The objection would be, that “tent-caterpillar” is an English equivalent for Clisiocampa, and need not be altered whether the particular species makes a tent or not. What is needed in names is fixity, not relevancy. Another objection is, that tentless is not the antithesis to tent, but to tented.