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Darwin Correspondence Project

To J. de C. Sowerby   13 February [1851]


Feb. 13th

My dear Sir

Many thanks for all the care you wish to take. I enclose two boards with specimens— you will see the central ridge is very little larger than the other longitudinal striæ, & that there are no marginal lateral main ridges as in some other species.— I send also the Scutum.— Attend to the Section of the Carina.—1

It is unfortunate, but I observe that the figures which have given most trouble are those of which drawings were made!

With thanks | Yours sincerely | C. Darwin

P.S. When convenient you can let me know what I am indebted to you—

P.S. All the specimens can perhaps be put together in the present Box & sent to the Geological Society, informing me of them as soon as sent there.—


The references are to parts of Scalpellum arcuatum (Fossil Cirripedia (1851): Tab. I, fig. 7) to Sowerby’s engravings of which CD had requested alterations (see letter to J. de C. Sowerby, 10 February [1851]).


Fossil Cirripedia (1851): A monograph on the fossil Lepadidæ, or, pedunculated cirripedes of Great Britain. By Charles Darwin. London: Palaeontographical Society. 1851.


CD appreciates JdeCS’s care. Sends specimens, noting points to be observed. He adds that the figures which have been most troublesome are those of which drawings were made [for Fossil Cirripedia (Lepadidae)].

Letter details

Letter no.
Charles Robert Darwin
James de Carle Sowerby
Sent from
Source of text
American Philosophical Society (Mss.B.D25.)
Physical description

Please cite as

Darwin Correspondence Project, “Letter no. 1389,” accessed on 20 September 2021,

Also published in The Correspondence of Charles Darwin, vol. 5