Thanks him for cirripede specimens. Discusses RF's collection.
Down Farnborough | Kent
My dear Sir
All your specimens arrived quite safely. I have had to thank you so often,
that I fear you will think it a mere form, when I say I do so most
sincerely.— I am in truth ashamed to think how much trouble you have had
& how much expence in postage I have put you to & I wish you would
permit me to return the Stamps. Your last lot have interested me, though not containing
anything new, yet there is one specimen far more valuable to me than a new
species, convincing me that the conclusion at which I arrived viz that
P. maximus & sulcatus of Sowerby are only
varieties, is correct. My work grows on me; by the same morning Post two new species
.—— var. sulcatum .
with many valves I. Scalpellum fossula. nov. spec III Pollicipes
productus nov. spec. IV. Pollicipes fallax. nov. spec.
V.—— striatus nov. spec.
So your collection has added 4 new species to my Monograph.; & removed much difficulty regarding S. maximum & its vars.— I have been much interested by hearing that your collection is fruit of 20 years, which I will allude to in my work.—
I am sorry to hear of your ill-health;—I know full-well what that is—
Yours sincerely | C. Darwin
- f1 1298.f1Dated from the relationship to letters to Robert Fitch, 15 January  and [23 January 1850].
- f2 1298.f2Pollicipes maximus and Pollicipes sulcatus (Fossil Cirripedia (1851): 26, 34). See also letter to J. J. S. Steenstrup, 3 April , in which CD stated that James de Carle Sowerby's Pollicipes maximus was a Scalpellum.
- f3 1298.f3CD cited drawings and descriptions of John Morris's Pollicipes concinnus and Pollicipes planulatus (Fossil Cirripedia (1851): 50, 78–9).
- f4 1298.f4A slip for J. Sowerby, i.e., James de Carle Sowerby. For the work done by J. de C. Sowerby in the Mineral conchology (Sowerby and Sowerby 1812–49), see Cleevely 1974, pp. 445–6.
- f5 1298.f5CD later changed the name of this species to Pollicipes angelini, after Nils Peter Angelin. See letter to J. J. S. Steenstrup, 1 September 1850. Angelin had found a single scutum, which he gave to J. J. S. Steenstrup (Fossil Cirripedia (1851): 6, 57). See also Trenn 1974, p. 481 n. 91.
- f6 1298.f6Fossil Cirripedia (1851): v.