﻿MACROCHILINA. 150 



1. Macrochilina suboostata, Schlotheim, sp. PL XVI, figs. 1 — 6. 



1821. Buccinites subcostatus, Schlotheim. Petrefakten-Kunde, p. 130, pi. xii, 



fig. 3. 

 1827. Buccinum imbeicatum, Sow. (pars). Min. Conch., vol. vi, p. 127, pi. dlxvi, 



fig. 2, right-hand figure only. 

 ? 1840. — — — Geol. Trans., ser. 2, vol. v, pt. 3, 



pi. lvii, fig. 23 a only. 

 1841. Macbocheilus aeculatus, Phillips. Pal. Foss., p. 139, pi. lx, fig. 194. 



1841. — elongatus, Phillips. Ibid., p. 104, pi. xxxix, fig. 195. 



? 1841. — imbeicatus, Phillips (pars). Ibid., p. 104, pi. xxxix, fig. 



194 a only (not Phil. Geol. York). 



1842. — Schlotheimi, d' Archiac and de Verneuil. Geol. Trans., 



ser. 2, vol. vi, pt. 2, p. 354, pi. xxxii, fig. 2. 



1843. Loxonema Phillipsi, F. A. Romer. Verst. Harz., p. 30, pi. viii, fig. 9. 



1843. — adpeessum, F. A. Romer. Ibid., p. 30, pi. viii, fig. 10. 



1844. Buccinum abculatum, Gold/, (pars). Petrel"., vol. iii, p. 28, pi. clxxii, 



fig. 15 b only. 



1849. Macbocheilus subcostatus, d'Orbigny. Prodrome, p. 63. 



1849. Phasianella adpeessa, d'Orbigny. Ibid., p. 68. 



1854. Macbocheilus imbeicatus, Morris (pars). Cat. Brit. Foss., p. 256. 

 1854. — subcostatus, Morris. Ibid., p. 256. 



1854. — elongatus, Morris. Ibid., p. 256. 



1884. Loxonema Phillipsi, Clarke. Neues Jahrb. f. Min., Beil. -Band iii, p. 364. 



1887. Macbocheilus subcostatus, Tschernyschew. Mem. Com. Geol. Buss., 



vol. iii, No. 3, p. 171, pi. v, figs. 6 a, b. 



1888. — aeculatus, Etheridge. Foss. Brit., vol. i, Pal., p. 163. 

 1888. — elongatus, Etheridge. Ibid., p. 163. 



1888. — subcostatus, Etheridge. Ibid., p. 164. 



1889. — — Whidborne. Geol. Mag., dec. 3, vol. vi, p. 30. 



Description. — Shell large, turriculated, fusiform ; mucronate at the apex, more 

 or less inflated about the body-whorl, somewhat contracted at the base. Spire 

 consisting of about six or seven broad, slightly convex volutions. Suture shallow, 

 facing outward. Aperture ovate, narrow, very contracted at the upper angle. 

 Inner lip covered by a wide, flattened, spiral callosity, which is keeled above, 

 and extends round the columella. Body- whorl occupying about two-thirds the 

 height of the shell, flattened or slightly convex above, and becoming rather sud- 

 denly convex below. Shell-structure thin. 



Surface of the body-whorl covered, with numerous, strong, low, distant, 

 transverse, overhanging, acute ridges, facing away from the mouth, starting perpen- 

 dicularly downwards from the suture, and almost immediately arching backwards 



