ACTiEON. 467 



Tornatellxa, Conrad. There are tliree specimens in my Collection from the 

 ParJcinsoni-zoae of Burton Bradstock, one from the same horizon at Grove, and 

 two smaller specimens from the Parldnsoni Marl of Bradford Abbas. 



412. Action (Tornatell^ia) ooliticus, sp. nov. Plate XLII, fig. 11. 



Description : 



Height . • . . . .13 mm. 



Body-whorl to total height . . . 55 : 100. 



Spiral angle ..... 48°. 



Shell oval, apex aunte. Number of whorls six, sub-tumid, with the posterior 

 edge more sloping than tabulate. The spiral striae are close, deeply cut and 

 punctate, the sloping shoulder of the whorls exhibiting a special form of grooving, 

 whilst the spirals in the upper poi'tion of the whorls are wider apart. Aperture 

 sub-elongate, elliptical, with a very short columella ; this has evidently been 

 marked with oblique folds, but it is not easy to say whether two or three ; 

 indications of an anterior notch. 



Relations and Distribution. — This form obviously differs from Actdson pulchellus 

 in its more slender shape, in the comparatively sloping posterior margin of the 

 whorls, and especially in the general closeness of the spiral striae. It is near to 

 Tornatellsea multistriata, Rigaux and Sauvage, and also resembles Tornatellsea 

 Brasili, Oossmann, which is described from the Bajocian of France. 



The finest specimens of Actdeon ooliticus occur in the Concaviis-hed at Bradford 

 Abbas. Stoford and Horton Hill have also yielded specimens, which bear 

 considerable resemblance to the Bradford Abbas forms. When the folds on the 

 aperture have been effaced, it might be difficult to distinguish this species from 

 Actseonina pnlla, K. and D. There is a very slender variety with five whorls from 

 the "Base-bed," Lincoln, ? a distinct species. 



413. AcT.EON scuLPTUs, Lijcett, 1850. Plate XLII, figs. 10 and 10 a. 



1850. Ceeitella sculpta, Lyceft. Ami. Mag. Nat. Hist., 2rid ser., vol. vi, 



p. 419. 

 1853. _ _ _ Proc. Cotteswold Nat. Club, vol. i, p. 80. 



The following is Lycett's diagnosis : — " Small, turrited ; whorls few, long, 

 nearly flat, each with three encircling strige, equidistant ; the body -whorl has six 

 striae besides numerous others closely arranged at the base." 



