36 TEREBRATULIDA. 
coasts. We refer to the second vol. p.355, of the ‘ British 
Mollusca’ for a description of this animal. 
T. cranium, Miller. 
T. cranium, Brit. Moll. ii. p. 357, pl. 57. f. 11; and iv. p. 257. 
This species is said to have occurred in Zetland. The 
animal has not been observed. 
ARGIOPE, Deslongchamps. 
A. CISTELLULA, Searles Wood. 
A. cistellula, Brit. Moll. ii. p. 361, pl. 57. f. 9, and iv. p. 257. 
We have taken this species in the coralline zone, at Ex- 
mouth, with the animal in the shell, but perfectly dry; and 
all that is known of it is, that it has spiral arms supported by 
an apophysary process. 
The present shell is quite fresh; it is of subquadrate form, 
pale brown colour, much more compressed than the Shetland 
specimens, and has the mesial groove more distinctly deve- 
loped; still it is only a variety of the Megathyris cistellula, 
which M. Philippi states to be subject to much variation of out- 
line. Axis et diameter | unciz. I have again recently taken 
from the coral zone of the South Devon coast, at Exmouth, in 
thirteen fathoms water, the MW. cistellula, now Argiope cistel- 
lula of the ‘ British Mollusca,’ the Terebratula seminulum ? 
Philippi, which I believe has not been found so far south im 
the United Kingdom, except fide Turtoni, 11 Torbay; I am 
sure that Professor Forbes and Mr. Hanley will feel pleasure 
in the corroboration of the correctness, in this instance, of 
Dr. Turton’s habitat: see the note in the ‘ British Mollusca,’ 
vol. 11. p. 362. I have had on several occasions personal inter- 
course with Dr. Turton, and became the original purchaser of 
his collection of British shells, which, durmg my temporary 
secession from malacological pursuits, passed out of my pos- 
session ; Dr. Turton also did me the honour of the dedication 
of his Manual of the Land and Freshwater Mollusca. Under 
