Fossil Terebratulse. 443 



near Cologne, described and figured by Schlotheim in 1823 under 

 the name of Terebratulites aperturatus, Nachtragen, pi. 17. tig. 1. 

 Lamarck^s name published in 1819 ought to have priority ; the 

 species would therefore be the Spirifer canalifet-a (Val. Sp. S.). 

 All the figures referred to in pi. 244 of the ' Encyclopedic ' do 

 not however belong to the same species ; fig. 5 would be the Spi- 

 7'ifer canalifera, fig. 4 the Spirif. Verneuilii (Murch.), and fig. 6 

 the Spirif. Archiaci (Murch.). VYe also find assembled under 

 the same head in the collection of the Garden of Plants, as well 

 as at B. Delessert's, besides the above-mentioned species, speci- 

 mens of Spirif. rostratus from the lias, and Spirif. Bouchardii 

 from the Devonian beds. One specimen of Spirif. Verneuilii, 

 which I figure in my plate under the number 40 A, shows the 

 perfect deltidium, rarely preserved in the Spirifers of that species. 



41. Terebratula lavicosta, Val. in Lamk. PI. XV. fig. 41. 



T. testa trigonata, gibba, lateribus sulcata : in medio valvse majoris sinu 

 et minoris costa lata, utriusque Isevibus, transverse striatis : cardine 

 recto, nate recurva. 



Obs. No reference as to figure is given by Lamarck ; all that is 

 stated is, that the '^ fossil comes from Benberg near Cologne." 

 However M. Valenciennes kindly informs me, when sending his 

 type specimens, that he received the shells on which he established 

 the species in 1817 from Prof. Noggerath on his visit to Bonn : 

 it is the same shell figured and described in 1822 by Schlotheim 

 under the name of Terebratulites ostiolatus (Nachtragen, pi. 17. 

 fig. 3), placed afterwards in the Spirifers by B. von Buch (Mem. 

 Soc. Geol. de France), and by Bronn in Konig's genus Trigo- 

 notreta ; but as M. Valenciennes appears the oldest describer of 

 the species, it should retain the name of Spirifer Icevicosta (Val. 

 Sp. S.) ; it belongs to the Devonian beds of the Eifel, and not 

 to Benberg as stated by Lamarck. 



42. Terebratula intermediaj Val. in Lamk. PI. XV. fig. 42. 



T. testa subtetraedra, dilatata, plicata, sinuata, 4 costis ad sinus 5 ad 

 latus : nate brevi. 



Obs. I was not able to find the original specimen on which 

 the species was established, but reference is made to pi. 245. 

 fig. 3 a, b. of the ' Encyclopedic Methodique,' which is sufficient. 

 1 have thought it advisable, in order to complete the series, to give 

 here the figure out of that work. Lamarck states that his spe- 

 cies is intermediate between Terebratula tetra'edra and plicata : 

 it evidently belongs to the Jurassic period. 



43. Terebratula alata, Val. in Lamk. PL XIV. fig. 43. 



T. testa subtrigonata, subgibba, superne sinu cave exarata, creberrime 

 sulcata : nate brevi. 



