144 MR. BRODERIP ON SOME NEW SPECIES OF BRACHIOPODA. 
The rounded anterior edge of this shell is green, and the transverse lines of that 
colour are produced by the progressive increase of the shell, which is smooth and parch- 
ment-like. In all the dried specimens the thin anterior edge is contracted into a square 
form, so as to produce a resemblance to a very square-toed shoe; but in its natural 
state this edge is rounded. A general contraction, moreover, gives the dried shells a 
narrower and more ventricose character than they really possess; and the remains of 
the cilia of the branchie give to their anterior edges a bearded appearance. The di- 
mensions above given were taken from the largest specimen which I have seen: the 
individual dissected by Mr. Owen is comparatively small. 
Mr. Cuming found this species, which bears the name of the Baron de Férussac, at 
about half-tide, in an extensive bottom of hard coarse sand, from four to six inches 
below its surface. The extent of the sand was about twelve miles long, and two miles 
wide. 
2. Lineuta SEMEN. 
Tab. XXIII. Fig. 17. 
Ling. testé ovato-oblongd, crassiusculd, pland, albidd, levissimé, politd, limbo anteriore 
rotundato. 
Long. » poll., lat. +4. 
Hab. ad Insulam Platam. 
Mus. Cuming. 
This shell, the only one I have seen, was dredged by Mr. Cuming in fine coral sand 
from a depth of seventeen fathoms. It may be a young individual ; but the shell is so 
much firmer than it usually is in Lingula (so firm, indeed, as not to have contracted at 
all in drying), that I cannot but look on it as an undescribed species. In size and ap- 
pearance it bears a near resemblance to a melon seed. 
Mr. Cuming informs me that he found another specimen, about a line longer, at the 
same time and in the same place, but that he has unfortunately mislaid it. 
PLATE XXII. 
Fig. 1. TerepratuLa CHILENSIS. 
2. TEREBRATULA Uva. 
PLATE XXIII. 
Fig. 1. Orsicuta Cuminait. 
1*,. ORBICULA STRIGATA. 
2. ORBICULA LAMELLOSA. 
14. Lineuta AuUDEBARDII. 
17. Lineuta SEMEN. 
