444 Mr. T. Davidson on Lamarck's species of 



Obs. Lamarck refers to pi. 245. fig. 2 a, b. of the ' Ency. Me- 

 thod./ but as M. Deshayes justly observes in his new edition of 

 Lamarck, this species is the same as that published in 1814 by 

 Brocchi under the name of Anormja Vespertilio, Conchologia Fos- 

 sile, fig. 17, which is also evident from specimens both in the 

 collection of the Garden of Plants and of B. Delessert's museum. 

 M. Deshayes also remarks, that on looking at the figures 1 and 2 

 of the pi. 245, one would have some difficulty in believing that 

 both belonged to the same species : I agree with M. Deshayes 

 in this — fig. 1 would agree with Brocchi's type and Lamarck's 

 specimens. This species varies much, as can be well seen in 

 M. D'Orbigny's figures, Pal. Franc, vol. iv. pi. 499. fig. 1-7. 

 Fig. 2. pi. 245, the one referred to by Lamarck, is probably Tere- 

 bratula compressa, Lamk. no. 54, as it shows that peculiarly 

 shaped front so well displayed in this shell; however there are 

 more than one species placed under this head in the Paris col- 

 lections. At the Garden of Plants we find on the same tablet a 

 specimen of Terebratula Vespertilio associated with Ter. latissima 

 of Sowerby, and at M. Delessert's we see three or four species, 

 among which, under the head of variety, is placed a specimen of 

 Pentamerus, a Spirifer, and a Terebratula of quite another shape. 

 This association is so strange that I can hardly believe they were 

 so put together by Lamarck. Brocchi' s name however should be 

 preserved to this species, and that of Lamarck placed among the 

 synonyms. The identity of Lamarck's species with that of 

 Brocchi is also admitted by M. D'Orbigny in his ' Pal. Francaise 

 Ter. Cretaces/ vol. iv. p. 44. 



44. Terebratula concinna (Sow. M. C. tab. 83. fig. 6). 

 Obs. The specimens under this name in B. Delessert's collec- 

 tion appear to belong to Ter. obsoleta, Sow. 



45. Terebratula media (Sow. M. C. tab. 83. fig. 5). 



Obs. The specimens ticketed thus by Lamarck belong to 

 Sowerby's true Ter. tetra'edra : the distinctions between Ter. te- 

 tra'edra and media, Sow., are very trifling. 



46. Terebratula pectita (Sow. M. C. tab. 138. fig. 1). 



Obs. I did not find any specimens of this species in either of 

 Lamarck's collections. 



47. Terebratula Cardium, Val. in Lamk. PL XIV. fig. 47. 



T. testa elongato-ovata, convexa, plicata, sulcis longitudinalibus crassis, 



rotundatis : nate prominula. 

 Var. b. testa compressiuscula, sulcis crebrioribus. 



Obs. Lamarck refers to pi. 241 . fig. 6 a, b, c. of -the ' Ency. 

 Method./ and this species is too well known to require many re- 



