From Francis Walker   10 December 1843

Grove Cottage | Southgate

Decber. 10th.—43.

My dear Sir

I hope you will excuse my long delay in answering your request for information concerning the resemblance between the Chalcidites which you collected, & the European species of that tribe. I should have written sooner if I had anything to communicate respecting them. With a very few exceptions the species from all the localities are remarkably similar to those of Europe, & not as a group to be distinguished from them.

The species of Eucharis from Australia & from Bahia, Brazil, & Thoracantha Latreillii from the latter spot, are altogether different from the European forms, & so also is Miscogaster (Agamerian N.G. Haliday M.SS.) Gelo, an Australian species. Charles Isle, Galapagos presents a form quite distinct from any of Europe, it is Merostenus Sadales. Mr. Haliday1 has established the genus Lelaps upon it & upon another species found in St. Vincent’s Island by the Revd. Lansdown Guilding. There are a few other species from various localities differing slightly from the British forms, but I have very little knowledge of the European species, & only very few Chalcidites from the South of Europe have yet been described. I am glad that your Chalcidites are safely deposited in the British Museum,2 & I hope soon to be able to examine their structure more closely than I did when I described the species.3

Believe me my dear Sir | Yours very truly | Francis Walker.

Alexander Henry Haliday. See Haliday 1841–3.
At least a part of CD’s collection is still to be seen at the British Museum (Natural History).
Walker described Chalcididae collected by CD in the Entomological Magazine (F. Walker 1838), in a monograph (F. Walker 1839), and in several articles that appeared in the Annals and Magazine of Natural History, (1842–3).

Please cite as “DCP-LETT-721,” in Ɛpsilon: The Charles Darwin Collection accessed on 5 June 2025, https://epsilon.ac.uk/view/dcp-data/letters/DCP-LETT-721