244 W. H. micUeston—On the Yorkshire Oolites. 



of the aperture are destroyed, but sufEcient of the inner lip remains 

 to show the little point at the anterior extremity. Axial lines in the 

 sulci well cut, and very conspicuous in the body- whorl. 



Belations and Distribution. — This pretty little shell differs from 

 T. Phillipsii in its smaller spiral angle, in the sharpness and salience 

 of the granulations and in the greater space between each, though 

 this may be partly the result of difierence in condition and matrix. 

 None of the spiral belts approaches a keel in character. It may be 

 the form referred to by Dr. Wright as T. Fhillipsii (List of Dogger 

 fossils, vol. cit. p. 15). One can hardly fail to notice its resemblance 

 to forms occurring in the Coral Eag of Yorkshire, which are generally 

 classed with the Turbo {Littorina) muricatiis group, though presenting 

 certain differences. As with Ceritliium mui-icatum, so with this great 

 group, forms which occur in the Corallian rocks seem to have been 

 foreshadowed in the Dogger. 



The specimen figured is the only one that I have seen. 



51. — Littorina. Cf. Fhillipsii, M. and L. Plate VIII. Figs. 3 and 4. 



Compare — 



Turbo Fhillipsii, M. and L., ut antea. 

 Turbo Meriani, Golclf. iii. 91, pi. 196, 16. 



Description. — Specimen from the red-stained Oolite of the Kello- 

 way rock (zone 5), Scarborough. Leckenby Collection. Fig. 3. 



The substance is in a great measure gone, leaving a somewhat 

 compressed and indistinct outline of what was once a sharp conical 

 shell with about five whorls, divided by a rather wide suture, and 

 ornamented with granular spiral belts, of which three are traceable, 

 the lowest being the most prominent. 



Another Specimen. — From the Oxford Clay (zone 6), Scarborough. 

 Leckenby Collection. Fig. 4. 



The shell-substance is entirely gone, but there is a very fair cast 

 of the body-whorl with its ornaments : the rest of the spire is com- 

 pletely wrecked. This too was a short conical shell with granulated 

 spiral bands, the lowest being the most prominent. In the base the 

 spiral belts are better preserved and make more show in consequence. 



Belations and Distribution. — A comparison of these ill-preserved 

 specimens from the Lower Oxfordian of Scarborough, either with the 

 T. Phillipsii of the Millepore rock, or with the figures of T. Meriani 

 in Goldfuss and D'Orbigny, would be very much like comparing 

 a man in full dress with another who had been rolled in the gutter 

 and his face battered to pieces. There is a general resemblance, and 

 that is all one can say. It would be only natural to suppose that 

 Time had wrought some changes from the Millepore type, and if 

 such changes could be correctly diagnosed, we might enter these 

 specimens as distinct varieties, characteristic of the locality and the 

 horizon. 



I can scarcely doubt that these forms are more or less connected 

 with that section of the Littorina {Turbo) muricata group desci'ibed 

 as variety A in the "Corallian Gasteropoda" (Geol. Mag. 1880, 

 p. 534, PL XVII. Fig. 7). The difficulty is to know where to draw 



