124 PROC. COTTESWOLD CLUB vol. xiii. (2) 



fimbriate Terebratidce known in the Jurassic rocks of 

 England,namely 7". />//<:«/«, J. Buckm.and T. fimbria, %o\v., 

 both of these shells being found in the Oolite Marl and 

 the Pea Grit : the former being common in the Pea Grit, 

 and the latter very abundant in the Oolite Marl. Two 

 other fimbriate Terebratuloids (one being a Terebrahila, 

 and the other a Magellania) are found in the Lias on the 

 Continent ; and occasional specimens having additional 

 plicae are found belonging to species which normally have 

 either a plain margin, or a single, or a double fold, as 

 T. sphcEroidalis, Sow., T. conglobata, E. Desk, and T.gio- 

 baia, So\v. 



The species to which T. galeiformis is most nearly 

 allied is undoubtedly T. curvifrons, Oppel, which in 

 some localities is abundant in the Oolite Marl ; though 

 T. curvifrons belongs to a somewhat lower horizon than 

 that to which I assign the present specimen. 



In the very inflated pedicle valve and flat brachial valve 

 the present species has a very strong resemblance to 

 T. simplex, J. Buckm., which, however, is confined to the 

 Pea Grit. The plicated margin is as I have already stated 

 a character v^-hich it bears in common with T. fimbria 

 and T. plicata. The brachial supports cannot of course 

 be seen ; but from analogy I do not hesitate to assert 

 that the loop is very short, and that no mesial septum 

 exists. 



2. TEREBRATULA SUB-SPH.-EROIDALIS, sp. n. 



PI. III., figs. 5—7. 



Diagnosis.— Shell inequivalve, pyriform ; pedicle valve re- 

 gularly convex ; brachial valve considerably elevated near 

 the umbo, sloping gradually towards the front, where it 

 makes a somewhat acute angle with the pedicle valve ; 

 beak prominent, and well separated from the umbo, trun- 

 cated by a medium-sized, round foramen ; lateral ridges 



