Fossil Terebratula?. 435 



this report as short as possible, I have simply added a few obser- 

 vations after each Latin description of Lamarck or Valenciennes. 



In 1836 M. Deshayes published the 7th volume of his new 

 edition of Lamarck's work, to which he annexed numerous spe- 

 cies and notes, but did not materially increase our knowledge of 

 the fossil species described in the edition of 1819, from not 

 having had the advantage of examining and comparing the spe- 

 cimens in the original collection ; there are however some useful 

 notes and references which may be consulted with advantage. 



The following is the order in which Lamarck's species are 

 described in the 6th volume of the ' Animaux sans Vertebras.' As 

 the recent species have been often figured, it will simply be ne- 

 cessary to give the list : — 



1. Terebratula vitrea, Lamarck (Linn. sp.). 



2. dilatata, Lamk. 



3. pisum, Lamk. 



4. globosa, Lamk. 



5. rotundata, Lamk. 



6. flavescens, Lamk. 



7. dentata, Lamk. 



8. dorsata, Lamk. 



9. sanguined, Lamk. 



10. Caput serpentis, Lamk. (Linn. sp.). 



11. truncata, Lamk. (Linn. sp.). 



12. psittacea, Lamk. (Linn. sp.). 



Fossil Species. 



13. Terebratula subundata (Sow. M. C. tab. 15. fig. 7). 



14. Terebratula carnea (Sow. M. C. tab. 15. fig. 5, 6). 



Obs. These two species are not to be seen in Lamarck's col- 

 lection. 



15. Terebratula depressa, Val. in Lamarck. PI. XIII. fig. 15. 



T. testa oblonga, transversim dilatata, supra coarctata et obtusa, striis 

 concentricis laevibus : nate producta non incurva : foramine magno. 

 Var. b. testa minore : nate breviori. 



Obs. This species is perfectly characterized and found in the 

 Tourtia beds of Tournay and Montignies-sur-Roc in Belgium, 

 whence Lamarck's specimens came ; it is strange however how 

 little it was known, since M. le Vicomte D'Archiac, in his " Rap- 

 port sur les Fossiles du Tourtia," Memoires de la Soc. Geol. de 

 France, vol. ii. 2nd series, p. 313. pi. 17. fig. 2 a, b, c, d, 3-10, 

 1847, believed it new, and gave to it the name of Terebratula 

 Nerviensis, which is a synonym : in the Quarterly Journal of the 



28* 



