Fossil Terebratula?. 447 



oolite species. Lamarck's three specimens are to be seen in the 

 collection of the Garden of Plants with the following locality, 

 " Mortagne pres Alencon, Briere :" it is common in Normandy 

 and in England. 



53. Terebratula spathica, Val. in Lamk. PL XIV. fig. 53. 



T. testa subtrigonata, subglobosa, laevi : margine supero sinuato : nate 

 acuta subproducta. 



Obs. Lamarck gives no reference to a figure, but states that 

 his specimens come from the hills on the boundary of the Sarthe ; 

 and I am at a loss to know what is the type of this species, not 

 from want of specimens, but from the number of different species 

 placed under one head in Lamarck's two collections — thirty spe- 

 cimens under this name, some referable to the Ter. tetra'edra, Sow., 

 Ter. concinna, Sow., Ter. media, Sow., Ter. varians and Ter. ri- 

 mosa, and perhaps another species ; so that as there would always 

 exist much doubt as to the real type, it will be necessary to 

 cancel this species from the nomenclature. In my plate I have 

 figured two of the specimens ticketed by Lamarck as Ter. spa- 

 thica, as some of the boards bear the title of "variety" : one is 

 Sowerby's Ter. tetra'edra, the other Ter. varians. 



54. Terebratula compressa, Val. in Lamk. PI. XV. fig. 54. 



T. testa dilatata, margine supero denticulato subflexuosa : nate pro- 

 ducta acuta. 



Obs. Although no reference is given by Lamarck, this is a 

 well-known greensand shell from Mans, and admitted by M. 

 D'Orbigny in his l Pal. Franc. Ter. Cretaces/ pi. 35, who gives 

 also a long list of synonyms relating to it : the plaiting of the 

 margin in this shell is very peculiar. 



55. Terebratula granulosa, Val. in Lamk. PI. XIV. fig. 55. 



T. testa subdepressa, rotundata, margine supero antice in rostrum 

 producto : sulcis granulosis : nate brevi. 



Obs. No reference as to figure is given, but Lamarck states 

 that the specimens were brought from Monte Mario near Rome 

 by Cuvier. There must however exist some strange mistake in 

 this statement, as many specimens are labeled by Lamarck Ter. 

 granulosa both in B. Delessert's collection and that of the Gar- 

 den of Plants, specimens which never could have been found in 

 situ at Rome, where we only find volcanic and tertiary deposits, 

 while the specimens named so in the collections belong not only 

 to different formations, but to different species : thus we find a 

 specimen of Terebratula reticularis of Linnseus in B. Delessert's 

 collection ticketed Ter. granulosa by Lamarck, and which I have 



