W. H. Hudleston — On the Yorkshire Oolites. 253 



should be mentioned here that Brauns considers Tornatella pulla, K. 

 and D., the same as Action pullus, M. and L., but different to 

 Auricula Sedgvici, Phil, (see his table of synonyms, Mittl. Jura, 

 p. 194.) 



Description. — Specimen from the Dogger (zone 1), Peak (Blue 

 Wyke). Bean Collection, British Museum. About 10 mm. in 

 height and considerably more than half as wide as high. 



Shell ovate, with a short spire composed of about 3 whorls, apex 

 somewhat obtuse. The whorls are exceedingly tabulate, with a well- 

 marked suture. N.B. — The stumpy character and tabulate whorls 

 of Actcson Sedgvici are better shown in the figures of Phillips, and 

 of Morris and Lj^cett, than in the accompanying Plate. Body- whorl 

 large in proportion to the rest of the shell, and barrel- shaped. 



The body- whorl and penult are ornamented by fine spiral grooves, 

 which are but slightly punctate : the surface of the body-whorl is 

 thus divided into a number of strap-like belts, of which two, situate 

 slightly below the middle, are wider than the rest, and constitute 

 a somewhat conspicuous feature. Other indications wanting. 



N.B. — The average of specimens appear to be considerably smaller 

 than the one figured. 



Another specimen. — Same horizon and locality. York Museum. 

 Possibly the type. Not figured. 



The stumpy character of the spire, and barrel-shaped outline of 

 the body-whorl, are well shown in this specimen, which, though 

 small, is in good preservation and free from matrix — a very rare cir- 

 cumstance. The aperture is wide and semilunar, the outer lip being 

 somewhat effuse: columellar region much excavated; columella 

 thick, prominent, and oblique, but not plicated. 



Belations and Distribution. — It is evident that fossils very nearly 

 approaching this species occur on a low horizon in the Inferior 

 Oolite elsewhere. In Yorkshire one example has been met 

 with, as we have seen, in the Upper Lias of the Peak ; otherwise, it 

 occurs only in the Dogger. I have seen it from the "Green Bed" 

 of Casterton near Stamford along with the characteristic Astarte 

 elegans. This is, I presume, on the horizon of the Northampton 

 Sand. It must, however, be rare in other parts of England, nor have 

 I yet seen it from the rich shell-beds of the south-west. The figures 

 of D'Orbigny and of Koch and Dunker lead me to suppose that the 

 fossils referred to by those authors are much more closely related 

 to Action Sedgvici, than to the variety described by Morris and 

 Lycett. Hence J have very little doubt they are something more 

 than merely representative species. D'Orbigny seems to have 

 doubted the three folds in Deslongchamps' specimen from Les 

 Montiers. Until this point is cleared up, it would be useless to 

 institute any further comparison. Nothing of the sort is shown in 

 D'Orbigny 's figure. 



Description of variety pullus, M. and L., Fig. 5. — Specimen from 

 the Millepore Eock (zone 2), Cloughton. Bean Collection, British 

 Museum. ? Type. 



Height about 7 mm., and extreme width about half the height. 



