* 
principally marine, found on the South Coast of Devonshire. 7 
by some mistake the two first joints are undivided, so that the 
two pairs of arms appear to originate from the same articulation : 
there are also, in his, four minute appendicule at the extremity of 
the posterior end. "This could not be discovered in my specimens, _ 
and is probably a sexual distinction. | 
The same author refers with doubt to C. linearis of Linnzus 
for his pedatus, but it really is quite impossible to decide a matter 
so much in obscurity*. For the Linnean C. atomos Muller refers 
bis Squilla quadrilobata, the Cancer Phasma of the sixth volume 
of the Linnean "Transactions, and seems to conjecture, that, as 
well as filiformis and linearis, may be the same. 
I do not know that this has been described by any scation 
previous to Muller, and it is, I believe, hitherto unknown to be 
British. It differs from C. Phasma in several particulars, but es- 
sentially in possessing ten instead of six legs, the two middle 
= jaunts of the body in that species being destitute of any. 
"This has also three: pairs o: of abdominal vesicles, whereas the 
C. Phasma has but two pairs, ‚and those differently shaped. 
PHALANGIUM. 
PuanANGIUM ACAROIDES? 
= Tas. II. Fig. 4. 
. Phalangium acaroides. Gmel. Syst. p. 2944.—Turt. Lin. iii. p. 1T. ! 
 Chelifer americanus? Degeer Ins. vii. p. 953. t. 42. f. 1. 2. 
Body oblong, truncated at the posterior end: thorax smooth, 
glossy, the other part divided into eight joints beset, with hairs: 
* Dr, os eonsiders that. this can = no "her than. the Cancer linearis of Linnzus, 
first described, perhaps, by Baster in the Philosophical Transactions, vol. 50, under the 
title of Mirum animalculum inter Corallinas degens, and figured, both in its natural size 
and magnified, in the same vohime. k com per is ; the most accurate of naif 
| Pal pi 
