Mr. S. S. Buckman on Jurassic Brachiopoda, 391 



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

 and belongs to the Dallininje, so that Orthotoma hejjseana 

 and Glossvthi/ris minor, Zittel, are really liomceomcrphs. 



Tiie holotype of Terebratula BaJcen'oe, Davidson, is in the 

 British Museum {Mi'as Baker Coll.), no. B. 15078, and has 

 the same beak-cliaracters 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\luseum, and I do not know another anywhere else. Its 

 record " Inferior Oolite''' is evidently a mistake. 



3. Orthotoma Quenstedti, nora. nov. 



y.'/. 18ol. Ilaudb. Petref. p. 471 ; Terebratula heyseana (non Dunker). 

 T.f. Ibid. pi. x.xxvii. fig. 47. 

 T.l. Hinterweiler. 



M. " Lias 5. Araaltheenthone " [Pliensbachian]. 

 T]. \Margaritati.'\ 

 Note. — Xon T. heyseana, Dunker. Quenstedt's little circular shell 

 differs decidedly from Dunker's transverse form. 



4. Orthotoma reclusa (Quenstedt). 



T.d. Eudes-Deslongchamps, Pal. fran9., T. Jur. Bracli. p. 113 (pars) ; 



Terebratula ( Waldheimvi) heyseana, 



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



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



T.l. Alais (Gard). 



H. " Lias moven, Niveau de la T. nutnismalis " [Plieusbachian]. 



T). [? Armati.] 



5. Orthotoma toarciensis, nom. nov. 



T.d. Pal. fran?., Brach. Jur. p. 183 ; Terebratula ( Waldheimia) Lycetti 



(pars). 

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

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

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

 »;. [^Striatul{.^ 

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



Note. — Non T. Lycetii, Dav., l8ol = Oi-mthella Lycetti ; non T. Lycetti, 

 Eud.-Desl. pi. xlvii. fig. 7=0rnithella Ofpeli; non Waldheimia 

 Lycetti, Dav., 1878 = Fseudoylogsothyris banburiensis, nom. nov. 

 q. V. 



The species referred to above, between "which and the 

 others there has been some confusion, mainly on amount of 

 horaoeomorphy, 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* 



