250 lETTEES FEOM C. DARWDf, ESQ., 



XIY. — Letters from C. Darwin, Esq^., to A. Hancock, Esq. 

 Communicated hy John, Haneooh, Esq. 



The following letters from the late Charles Darvsan, Esq., to . 

 the late Albany Hancock, lEsq., are of so interesting a nature, 

 that it has been thought they would be suitable for the pages 

 of our Transactions, the more so as they specially refer to the 

 discovery and description of an interesting form of burrowing 

 Barnacle, Alcippe lampas, which was first observed on the ISTorth- 

 umberland Coast by Mr. Hancock, and afterwards described by 

 him in a paper communicated to the British Association, at the 

 meeting held in Birmingham, 1849. The references given are 

 chiefly to the Monograph of the Cirripedia by Charles Darwin, 

 published by the Eay Society.* 



No. 1. 



Down Famborough, Kent. 

 (Postmark Sept. 21st, 1849). 



Sir, 



I trust to your kindness to forgive a stranger taking 

 the liberty of addressing you. I have been for the last two 

 years (at least such portions of it as my health allowed me to 

 work in) employed on a monograph, anatomical and systematic, 

 of the Cirripedia ; it was consequently with the greatest possible 

 interest that I heard your admirable paper at Birmingham. I 

 made a few remarks on the subject, which will perhaps appear 

 in the AfhencBum. 



In S. America I collected an allied form, parasitic in the 

 Concholepas, and which possibly will be included in the same 

 order with yours, but which I think must certainly form a very 

 distinct family. 



I was very glad to hear from Mr. Taylor that your paper 



* Notice of the Occurrence, on the British Coast, of a Burrowing Barnacle belonging 

 to a new Order of the Class Cirripedia. By Albany Hancocls, Esq. Annals and Mag. 

 of Nat. Hist. 1849, vol. 4, 2nd. ser. pi. 8, 9. And Trans. Tyneside Naturalists Field 

 Club, vol. 1, p. 327. June 1849. 



