Vol. 51.] MUECHISONIA AND ITS ALLIES. 231 



upper part of the whorl, about midway between the angle and the 

 suture, there is a flat band, level with the surface, bounded on each 

 side by a groove. This band probably represents a sinus in the 

 outer lip. The lines of growth are strong and distinct ; they curve 

 backwards to the band above and forwards below, but are not 

 discernible on the band itself. Surface smooth. Sutures deep. 

 Base flattened. Mouth imperfectly preserved, subrhomboida], 

 slightly longer than wide. 



This shell bears some similarity to species of Flemingia, De Kon., 

 but may be distinguished by its band, and the form of the outer lip 

 as indicated by the lines of growth. It greatly resembles Oerithi- 

 oides telescopium * in general form, in the structure of the band, and 

 in the angularity, flatness, and smoothness of the whorls. It differs 

 in its much smaller size, in the base being smooth instead of grooved, 

 in the greater angularity of the whorls, and in the angle showing- 

 above the sutures. I place it provisionally in the section Ceri- 

 thioides. 



There are two specimens in Owens College Museum, Manchester. 

 That figured (PI. X. fig. 1) is the largest; it is crushed and only 

 three and a half whorls are preserved, whose length is 9 millim., 

 width 5| millim. The Museum of Practical Geology also contains 

 three individuals all more or less imperfect, four and a half whorls 

 being the most preserved. 



Locality. Todmorden, on the border of Lancashire and Yorkshire. 



Formation. Toredales (d 3 ). 



Section Caliendet/m, Brown. 



Murchisonia (Caliendetjm) vittata, Phill. (PL X. figs. 6, 7.) 



Buccinum vittatum, J. Phillips, 1836, ' Greol. Yoi-ks.' pt. ii. p. 230, pi. xvi. 

 fig. 14. 



Caliendrum vittatum, T. Brown, 1849, ' Illustr. Foss. Conchol. Great Britain 

 & Ireland,' p. 52, pi. xxxii. fig. 20. 



Murchisonia vittata, A. d'Orbigny, 1850, ' Prodr. de Paleont. stratigr.' vol. i. 

 p. 122; J. Morris, 1854, Cat. Brit. Foss. p. 259; J. J. Bigsby, 1878, 'Thes. 

 Dev.-Carb.' p. 327; E. Etberidge, 1888, 'Foss. of Brit. Islands,' vol. i. 

 Palasozoic, p. 302. 



Shell large, buccinoid, composed of more than six whorls. Spire 

 varying in elevation. Whorls convex, ventricose, smooth, increasing 

 somewhat rapidly, the body-whorl large compared with the length 

 of the spire. Sinual band broad, flat, but slightly raised above the 

 surface, bounded by a groove on each side, situated about the 

 middle of the whorls of the spire. Lines of growth strong, curv- 

 ing backwards to the band above, forwards below, and arched on 

 the band itself. Sinus in the outer lip deep. Mouth elliptical, 

 longer than wide. Columella slightly arched forward. Sutures 

 deep. No umbilicus. Test thin. 



Captain Brown states that the lip is greatly reflected on the 

 columella. The type is the only specimen that I have seen which 

 exhibits this part of the shell, and it has an irregular thickened 



1 ' Notes on some New and Little-known Species of Carboniferous Murchi- 

 sonia,' Quart. Journ. Greol. Soc. vol. xlviii. (1892) p. 573, pi. xvii. figs. 1,4,5,8. 



