216 MRS. JANE LONGSTAFF ON [May 1909,. 



a very different form to this species. Through the courtesy of 

 Prof. Hughes I have seen another specimen also placed here by 



Salter; it is in the Sedgwick Museum (q^h comes from the Lower 



Ludlow of Dudley, and is really in too poor a condition to make 

 anything of. Prof. Holm has kindly enabled me to compare the 

 shell named Loxonema sinuosum (Sow.) by Lindstrom with the 

 type, and I find it quite distinct, the whorls being more concave 

 above, more convex below, and the sinus situated lower. The form 

 of the lines of growth greatly resembles that of L. intumescens, 

 Lindstr., but the contour of the whorls is different. A Bohemian 

 shell described by Barrande as L. beraunense 1 was afterwards 

 referred by him to this species; Dr. Perner, however, considers it 

 distinct, and restores Barrande's name. 



Dimensions. — The length of the holotype (PI. X, figs. 1« & 16). 

 = 29 millimetres ; the width = 10 mm. 



Locality. — Garden House Quarry, Aymestry. 



Horizon. — Lower Ludlow. 



Loxonema cornttbicum, sp. nov. (PI. X, figs. 2a & 2b.) 



Loxonema sinuosum, J. Phillips, 1841, ' Pal. Foss. Cornw. Dev. & W. Somerset ' 



p. 99 (non p. 98) & pi. xxxviii, fig. 182. (Non Terebra (?) sinuosa, J. de 



C. Sowerby, 1839, ' Sil. Syst.' p. 619 & pi. viii, fig. 15.) 

 Loxonema sinuosum pars, H. G. Bronn, 1848, ' Index Palseont.' vol. i, p. 670. 

 Loxonema Phillipsii, A. d'Orbigny, 1850, 'Prodi*. Paleont. Strat.' vol. i, p. 62. 



(Non L. Phillipsii, Kcemer, 1843, ' Verstein. des Harzgebirges ' p. 30 & pi. viii,. 



fig. 9.) 

 Loxonema sinuosum, J. Morris, 1854, ' Catal. Brit. Foss.' p. 255. 

 Loxonema sinuosum, J. J. Bigsby, 1878, 'Thes. Dev.-Carb.' p. 83. 

 Loxonema sinuosum, R. Etberidge, 1888, ' Foss. Brit. Is.' vol. i (Pal.) p. 163. 

 Loxonema sinuosum, E. Koken, 1896, ' Die Leitfossilien ' p. 515. 



Diagnosis. — Shell subulate. Whorls more than four, in- 

 creasing at a moderate rate, flattened, very slightly convex, strongly 

 adpressed at the suture, high, smooth ; body- whorl subangular 

 below. Lines of growth strong, with some finer lines intercalated, 

 sigmoidal, greatest sinuosity near the middle of the whorl, widely 

 concave. Aperture imperfectly known, longer than wide. No 

 umbilicus. 



Remarks and resemblances. — The holotype (No. 7074} 

 is the specimen supposed to be that described and figured by 

 Phillips 2 as L. sinuosum, which is in the Museum of Practical 

 Geology, Jermyn Street. A query as to its being really Phillips's 

 type has been inserted on the label, probably because this shell 

 is disengaged from the matrix, and Phillips's figure is represented 

 as embedded. The fact of its having a little of the rock adhering 

 to the sides may have led the artist to represent it in this manner ; 

 in other respects the specimen agrees with the figure, and has a 

 similar breakage on the body-whorl. Another, but less perfect 



i 'Syst. Sil. Centre Bobeme' pt. i, vol. iv, Gasteropodes, par J. Perner, 

 tomes i & ii (1903 & 1907) pi. lx, figs. 18-19, with text-figs. 236-238 & 

 p. 327. 



2 'Pal Foss. Cornwall, &c.' 1841, p. 99 & pi. xxxviii, fig. 182. 



