M. E. Rigaux — The Brachiopoda of the Boulonnais. 439 



Waldheimia cardium, Lam. Very scarce, Cornbrash ; Le Wast, 



Lenlinghem. 

 Bhynchonella concinna, Sow. Common in the Hydrequent limestone. 

 Bhynchonella Hopkinsi, M'Coy. Very common in the Great Oolite of 



Marquise ; a single specimen from the Cornbrash at Le Wast. 

 Bhynchonella elegantula, Bouch. Very common in the marly lime- 

 stone between the Cornbrash and Great Oolite ; Le Wast, 



Marquise. 

 Bhynchonella Badensis, 0pp. Very common in the Cornbrash, Le 



Wast ; a single specimen from Hydrequent, in the lower part of 



the Great Oolite. 

 Bhynchonella Morieri, Dav. Very common in the Cornbrash; Le 



Wast, Marquise. 

 Bhynchonella varians, Sow. var. We find in the Cornbrash at 



Kinxent a small form which we refer to this species. 



Oxford Clay and Lower Calc Grit. 

 Waldheimia umhonella, Lam. Very common at Belle ; a single 



specimen from the clays at Le Wast. 

 Bhynchonella socialis, Phill. 

 Bhynchonella Leedsii, Walk. These three species are found in the 



ferruginous Oolite (Kelloway Eock), over the Cornbrash at Belie 



and Alincthun. 

 Waldheimia impressa, Buch. Occurs in great numbers in the clays 



at Le Wast; one specimen has been found in the Coral Eag 



at Carly. 

 Terehratula insignis, Sow. Scarce in the Calcaire and HouUefort 



(Elsworth rock) ; it is more common in the calcareous band over 



it at Eety, and is very abundant in the Calcaire du Mont des 



Boucards. 

 Waldheimia bucculenta, Sow. Very scarce, I have found six speci- 

 mens in the Calcaire du Mont des Boucards. 

 Bhynchonella pectuncidoides, Et. Very common in the lowest beds 



of the Calcaire du Mont des Boucards. 

 Bhynchonella myriacantha, Desl. I have found a single specimen in 



the clays at Blequeneque. 

 Bhynchonella spathica, Lam. Very common in the Ter. impressa 



beds; Le Wast. 



Coralline and Supraooralline Beds. 



Terehratula insignis, Sch. Ends in the Supracoralline Oolite at 

 Hesdin I'Abbe with forms which show a transition between this 

 species and T. subsella. 



Terehratula sid}sella, Leym. Shows itself at first in the Supracoral- 

 line Oolite at Hesdin I'Abbe, and goes up in the Kimmeridge beds. 



Terehratula globata ? Sow. The Oolite of Hesdin I'Abbe contains 

 a biplicated Terehratula, which I cannot distinguish from our 

 Great Oolite glohata. 



Waldheimia humeralis, Eom. I have sometimes quoted this species 

 under the name of T. hucculenta, which I apply now to another 

 species at a lower level ; it appears in the Coral Eag proper at 



