Mr. W. Clark on the Animal of Kelua rubra. wou 
Tribus 8. CryPH@ACE. — 
15. Cryphea, Brid. 
116. C. heteromalla, Hedw. Muse. Frond. 3. t.15 (sub Neckera) ; 
M. P. 96. 
Hab. Zy_, corticicola per Pyrenzos humiliores. 
[To be continued. ] 
| XXXIV.— Observations on the Animal of Kellia rubra, by Wi1- 
LIAM Ciark, Hsq., in a Letter to Professor Eowarp Forbes. 
To Richard Taylor, Esq. 
Dear Sir, 
TuE interesting letter I herewith send you relates to the curious 
little bivalve mollusk Kellia rubra, upon the animal of which 
some important observations were communicated by Mr. Alder 
to the number of the ‘ Annals’ for September last. In the 15th 
part of the ‘ History of British Mollusca,’ by Mr. Hanley and 
myself, full use is made of Mr. Alder’s notes, and also of valu- 
able manuscript notes on the Kellie kindly communicated to us 
by Mr. Clark. The discrepancies between the statements of dif- 
ferent observers as detailed in our work have induced Mr. Clark 
to turn his immediate attention to the subject, and the results 
are contained in the following letter. . Their value is such that I 
grudge the delaying of the communication of them to the public 
until the conclusion of the ‘ History,’ when we mean to add 
abundant new matter in supplementary notes. 
I need scarcely say that the statements of Mr. Clark go towards 
confirming the union of Recluz’s genus Poronia with Kellia, the 
view taken in the ‘ History of British Mollusca.’ M. Deshayes’s 
drawing of the animal of Kellia Geoffroyi (in the Mollusques 
d’Algérie) exhibits the same conformation of tube observed by 
Mr. Alder first and since by Mr. Clark in Kellia rubra. 
Most truly yours, 
Epwarp Forses. 
7 Norfolk Crescent, Bath, 
My pear Sir, 7th March, 1849. 
It gives me pleasure to have it in my power to send you what 
I think is a correct account of the malacology of Kellia rubra. 
After I had written to you on the 4th instant, I became dis- 
satisfied, and I determined to make an attempt at once to settle 
the point, as to the tube of Kellia rubra being open underneath 
or otherwise ; for which purpose I wrote to a friend to obtain 
from certain rocks, four miles from Exmouth, a parcel of Fucus 
