CD seeks information on the variation of ocelli within species of butterflies.

Thanks RT for drawings of ocelli, especially for the description of ocelli of S. African Saturniidae. Would like to know of any cases in which the ocelli are confined to the male, to illustrate better the case of the peacock.

Is interested in the relative numbers of males and females of all animals; wants any instances of males, or females, being in excess.

RT’s argument about the Lasiocampa strikes him as very good; asks for any similar cases. Wonders whether male butterflies may serve more than one female.

Asks whether RT will call.

Arranges for RT to call.

Thanks RT for letter which saves him from a "terrible mistake": that no moths were more brilliantly coloured beneath than above. Suggests revised version for comment. [See Descent 1: 397.]

Has tried using dealers’ price-lists as a guide to sex ratios in Lepidoptera; finds numerous cases in which the sexes bring different prices and in virtually all of them the males are cheaper. This seems to confirm the impression of the field collectors.

Wishes RT good luck with natural history in S. Africa.