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From G. R. Waterhouse [after 2 March 1855]
Summary
Gives instances of sexual differences in the number of tarsi within species of Coleoptera and also variation in the number of tarsi between related species.
Author: | George Robert Waterhouse |
Addressee: | Charles Robert Darwin |
Date: | [after 2 Mar 1855] |
Classmark: | DAR 47: 133–4 |
Letter no: | DCP-LETT-1625 |
From G. R. Waterhouse [7 March 1855]
Summary
Comparison of skulls of Ichthyosaurus and Cetacea.
Author: | George Robert Waterhouse |
Addressee: | Charles Robert Darwin |
Date: | [7 Mar 1855] |
Classmark: | DAR 181: 20 |
Letter no: | DCP-LETT-1642 |