To Samuel Pickworth Woodward 21 March 
Down Farnborough | Kent
My dear Sir
I am extremely much obliged to you for taking the trouble to give me so clear & succint a resumè of the history of Aptychus1 with your capital little sketches. I will come sometime to the Museum, & beg you to show me some specimens.— The facts you state (& a few specimens seen by me) appear to me to render d’Orbigny’s view, a priori, so improbable, that I hope a very short inspection will suffice for me.—2 I am far from anxious to drag anything into Cirripedia; with my small powers of work the order is now enough & too much for me.—
The (3) specimens which you gave me from Norwich were very useful to me, & well exemplify Pollicipes maximus & sulcatus of Sowerby, which I consider varieties of one species of Scalpellum.—3 The two specimens from the Grey Chalk have turned out very interesting: one I have described as a new species,4 & the other is a very rare one, seen by me only in Mr Bowerbank’s collection.5 I will take care of all, hereafter to be returned to Brit. Mus.—
I have not heard from the Dover man, & I fear you have not heard from the Norwich collector.— I am very sure dozens more species of Cirripedia will turn up— I wrote from your suggestion to Mr Tennant6 & he has most kindly lent me his collection, which contains 2 valves quite new to me.
Your’s very sincerely | With thanks | C. Darwin
Kind remembrances to Waterhouse
Thanks SPW for his history of Aptychus, which makes A. D. d’Orbigny’s view [that it is a cirripede] improbable. [See Fossil Cirripedia 1: 3.]
Specimens SPW sent are very useful and interesting.
Please cite as
Darwin Correspondence Project, “Letter no. 1314,” accessed on 25 April 2017, http://www.darwinproject.ac.uk/DCP-LETT-1314