PLEUROTOMARIA. 401 



Var. Ebrayana, d'Orbigny. Not figured. 



1854. Plerotomarta Ebrayana, d'Orbigny. Terr. Jur., vol. ii, p. 4S3, pi. 



ccclxxxvii. 



"We have only to imagine the typical PL elongata, Sow., sufficiently en- 

 larged with a corresponding increase of smoothness in the anterior whorls, and 

 we obtain these megalomorphs, which occur at Dundry and more especially in 

 the Sauzei-bed at Combe and Oborne. 



Var. turrita, Deslongchamps. (Plate XXXIV, fig. 8.) 



1848. Pleurotomaria mutabilis, var. turrita, Deslongchamps Vol. cit., 



p. 115, pi. x, fig. 10. 



A narrow-angled and strongly turrited variety ; the right lip almost vertical, 

 and prolonged into a well-marked gutter or notch ; ornaments of the basal rim 

 large and richly cut; sinus-band inconspicuous. This very rare form occurs in 

 the Parkinsoni-zone of Bradford Abbas and Woolston. It is interesting to note 

 that with the narrow form we again see a well-developed columellar notch. 



Relations, &c, of PL elongata generally. Sufficient has been said as to 

 relations under the head of " Bibliography, &c." Whilst narrow and peculiar 

 forms occur, as we have seen, both in the lowest and highest beds of the Inferior 

 Oolite, the typical PL elongata is especially characteristic of the Humphriesianus- 

 zone. 



336. Pleurotomaria abbreviata, Sowerby, 1818 ( = PL mutabilis, Deslongchamps, 



pars). Plate XXXIII, figs. 

 8 and 9. 



1818. Trochus abbretiatus, Soioerby. Min. Conch., pi. cxciii, fig. 5. 



1854. Pleurotomaria abbreviata, Sowerby. Morris, Cat., p. 271. 



Syn. — mutabilis, Deslongchamps, vars. abbreviata and corru- 



gata. Vol. cit., pp. 108, 109, pi. x, figs. 13 



and 18. 



Bibliography, Sfc. — Admitting that this is little more than a variety of the 



