Fossil Terebratule. 441 
form of its two plaits: one specimen is to be seen in the museum 
of the Garden of Plants, which was found by Sig. Bonelli in the 
tertiary beds near Turin in Italy. 
35. Terebratula quadrifida, Val. in Lamk. PI. XIV. fig. 35. 
7. testa triangulari-depressa, dilatata, leevi, superne quatuor angulis 
acutis instructa : nate brevi. 
Obs. This is a well-known species, common to the liasic beds 
of France and England ; one specimen only exists in Lamarck’s 
collection at B. Delessert’s ; it is one of the various shapes this 
species assumes, passing by insensible gradations into Terebra- 
tula cornuta, Sow. : nor is it uncommon to find (as can be seen in 
M. Deslongchamps’ cabinet) specimens, one half of which is gua- 
drifida, while the other half is cornuta: therefore Lamarck’s name 
should be kept for the species, and cornuta cancelled from the 
nomenclature. 
36. Terebratula angulata, Val. in Lamk. Pi. XIV. fig. 36. 
T.. testa subtrigona, ventricosa, leevi, margine supero valde sinuato, 
tribus angulis acutis. 
Obs. Three specimens are to be seen in B. Delessert’s collec- 
tion, but which belong to as many species, so that it is difficult 
to know which Lamarck intended as his type; this however is of 
little importance, as the name must be canceled, it having been 
given many years before by Linnzus to a mountain limestone 
shell differmg from Lamarck’s specimen. 
37. Terebratula multicarinata, Val. in Lamk. PI. XIV. fig. 37. 
T. testa magna, rotundata, pectiniformi, costis numerosis carinata : 
margine non sinuato. 
Obs. It is singular that M. D’Orbigny makes no allusion to 
Lamarck’s species, which holds priority over Baron Leopold von 
Buch’s Terebratula peregrina published long after 1834, and 
which M. D’Orbigny adopts in his ‘ Paléontologie Frangaise,’ 
when at a few steps from his own door he could have seen a fine 
specimen of this species in Lamarck’s collection at B. Delessert’s. 
It is one of the largest Terebratulas known, and would appear to 
belong to the Neocomian beds of Chatillon (Drome). Lamarck’s 
type specimen, of which I give a reduced figure, measured in 
length and breadth 3 inches and 13 inch in depth, but the spe- 
cies attained much greater dimensions, as can be scen from spe- 
cimens in the British Museum. It has been well figured by 
M. D’Orbigny in his ‘ Pal. Frang. Ter. Crétacés,’ vol. iv. p. 493, 
and in the ‘ Mém. de la Soc. Géol. de France,’ vol. i. p. 156. 
pl. 15. fig. 28. 
