Mr. S. S. Buckman on Jurassic BracJiiojpoda. 891 



The ridges suggest that T. heyseana is a long-looped form 

 and belongs to the Dallininte, so that OrtJiotoma heyseana 

 and Glossothyris minor, Zittel, are really homoeomorphs. 



Tlie holotype of Terehratula Bakerice^ Davidson, is in the 

 British Museum [Miss Baker Coll.), no. B. 15078, and has 

 the same beak-characters as T. heyseana. In fact, it must, 

 I think, be regarded as a synonym, as Oppel pointed out 

 years ago*. But there is only this one specimen in the 

 j\luseuro, and I do not know another anywhere else. Its 

 record "Inferior Oolite ^^ is evidently a mistake. 



3. Orthotoma Quenstedti, nora. nov. 



T.fl. 1851. Haudb. Petref. p. 471 ; Terehratula heyseana {monDimkQv). 

 T.f. Ibid. pi. xxxvii. fig. 47. 

 T.l. Hinterweiler. 



H. "Lias 5. Amaltheenthone " [Pliensbachian]. 

 j;. [3Ia)-ffaritafi.^ 

 Note. — Non T. heyseayia, Danker. Quenstedt's little circular shell 

 differs decidedly from Dunker's trausverse form. 



4. Orthotoma reclusa (Quenstedt). 



T.d. Eudes-Deslougchamps, Pal. frau9., T. Jur. Bracli. p. 113 (pars); 



Terehratula {Wakllieimia) heyseana. 

 T.f. Ibid. pi. xxiv. fig-. 1. 



N. Petref. Deutsch. ii. p. 313 ; Terehr. reclusa. 

 T.l. Alais (Gard). 



H. " Lias moyen, Niveau de la T. numismalis " [Pliensbachian]. 

 7]. \? Armati.'] 



5. Orthotoma toarciensis, nom. nov. 



T.d. Pal. fran?., Bracb. Jur. p. 183 ; Terehratula {Waldhehnia) Lycettl 



(pars). 

 T.f. Ibid. pi. xlvii. figs. 5, 6. 

 T.l. Verrines, near Thouars (Deux Sevres). 

 H. " Marnes a A. thouarsensis" [Toarcian]. 

 T). [Striatuh'.'] 

 Coll. Eudes-Deslongchamps [Prof. Bigot, Caen]. 



Note. — Non T. Lycetti, Dav., l^bl = Ornithella'Lycetti; non T. Lycetti, 

 Eud.-Desl. pi. xlvii. fig. 7 = Oniith ella Oppeli ; non Waldheimia 

 Lycetti, Dav., ISIS — Pseudoglossothyris banburiensis, nom. nov. 

 q. V. 



The species referred to above, between which and the 

 others there has been some confusion, mainly on amount of 

 homoeomorphy, are now given. 



* Davidson himself notes the likeness, but says that Dunker's name 

 was published in the same year (1851) as his own Appendix p. 17. 



28^ 



