Thanks J. D. Dana for cirripede specimens. Describes his work. Comments on Ibla. Would like to see AAG's notes and figures on Anatifa. Asks for references to cirripede descriptions by T. A. Conrad.
Down Farnborough Kent
I did not receive your very kind note of April 30
I will send the Scutella to M
I have acted on your kind suggestion & written to M
You say “that I have figures & notes of 3 or
4 species of Anatifa which I c
I thank you most cordially for your offer of further assistance: from my health & the extreme difficulty of describing the species, I shall certainly be employed a year or two more on the Cirripedia—
Could you tell me in what works M
With my sincere thanks | Believe me | Your's faithfully & respectfully | C. Darwin
If you ever see an Anatifa adherent to a Crab, you may be almost sure it will be new & interesting: there are several species, which I have been compelled to separate under a new generic name: I am glad to say that I have had to run far more genera together, than to separate & make new ones.—
- f1 1251.f1CD was at work on the pedunculated cirripedes and did not begin to examine the sessile barnacles until April 1850 (‘Journal’; Correspondence vol. 4, Appendix I). In Living Cirripedia (1854), Gould is frequently cited as having provided specimens.
- f2 1251.f2Gould's specimen from Tavoy, Burma is described in Living Cirripedia (1851): 183.
- f3 1251.f3Ibla cumingii, a species in which the sexes are entirely separated. The other species of the same genus, I. quadrivalvis, is intermediate between usual hermaphrodite species and I. cumingii, having hermaphroditic individuals and reduced complemental males.
- f4 1251.f4Timothy Abbott Conrad. In Living Cirripedia (1851): 307 and (1854): 447, 465, citations of species named by him are from the Journal of the Academy of Natural Sciences, Philadelphia, volume seven (1837).
- f5 1251.f5CD, after some deliberation, decided to separate species of the new genus Poecilasma, ‘generally attached to Crustacea’, from the genus Lepas. He explained in Living Cirripedia (1851): 72: ‘Although some of the species of Pæcilasma so closely resemble externally the species of Lepas, yet if we consider their entire structure, we shall find that they are sufficiently distinct’.