448 Mr. T. Davidson on Lamarck’s species of Fossil Terebratule. 
figured in my plate ; besides other specimens of a Neocomian 
species labelled Ter. granulosa var., a figure of which I have also 
given ; and in the collection of the Garden of Plants, besides these 
last-named shells, we find a specimen of Terebratula spinosa and 
varians : it is therefore evident that this species must be can- 
celled from the nomenclature, since none of the species therem 
placed could claim a preference. 
56. Terebratula Articulus, Val.in Lamk. PI. XIV. fig. 56. 
T. testa trigona, depressa, tenerrime longitudinaliter striata: margine 
supero angulato: nate brevi. 
Obs. No reference is given, except that the specimen is in the 
museum of the Garden of Plants, where I found it, and that it is 
from the Dep. of the Sarthe. “The smooth surface of this spe- 
cies (adds Lamarck) and its deeply angular front give to it the 
aspect of the articulation of a shell ;” but on examining his spe- 
cimen, as can be seen by the figure, it has some characters of 
M. Richard’s Terebratula Cynocephala and furcillata, as the 
greater half of the valves from the beak and umbo are orna- 
mented by numerous small Jongitudinal strize which do not ex- 
tend to the margin of the shell ; it belongs probably to the lias 
deposits, and I have never seen but the one specimen on which 
the species was established. 
57. Terebratula radiata, Val.in Lamk. Pl. XIV. fig. 27. 
T. testa subdepressa, inferius coarctata, superne dilatata, rotundata, 
sulcis longitudinalibus radiatis, margie subflexuosa. 
Obs. No reference is given by Lamarck, except that the spe- 
cimens are in the museum of the Garden of Plants, where I found 
them. It is probably a Neocomian shell, at least the specimen 
which I consider the type, and which I draw in my plate. It ap- 
proaches in form to Rhynchonella paucicosta, D’Orb. Pal. Frang. 
pl. 494. fig. 1, 5. 
58. Terebratula pumila, Lamarck. Pl. XIV. fig. 58. 
T. testa minima, compressa, valvya minori complanata, sulcis longitu- 
dinalibus radiatis : nate acuta producta. 
Obs. As M. Deshayes justly remarks in his new edition of La- 
marck, this species belongs to the Thecidea radiata (Defrance), 
and not to the Magas pumilus of Sowerby. Several specimens are 
to be seen both in M. Delessert’s collection and in that of the 
Garden of Plants, which are derived from the chalk of Maestricht. 
59. Terebratula spirifera, Val. in Lamk. Pl. XV. fig. 59. 
T. testa trigonata, transverse dilatata, spiris ad latera decurrentibus 
instructa, margine supero angulata : nate brevi perforata. 
Obs. Lamarck refers to the ‘ Encyclopédie Méthodique,’ 
