306 
DEVONIAN FAUNA. 
ness of Sandberger's identification ; and as he gives no reason for changing the 
name of course Goldfuss's original name must stand. 
Affinities. — This shell is so similar to Botellina helicina, Miinster sp., in 
general appearance that even Mr. Tawney supposed it to be the same shell, but it is 
clearly distinguishable by the presence of a sinus-band, by its more elevated spire, 
and its less discoid form. From Pleurotomaria gracilis, Phillips,^ to which Mr. 
Tawny referred both shells, it is distinguished by its sinus-band being well 
within the shoulder instead of on the median line of the whorl, and by its more 
globose shape. 
In PI. Brilonensis, Kayser,^ the sinus-band is much farther down from the 
suture. 
Schizostoma bistriata, Miinster,^ differs in having a depressed sinus-band which 
is not so high up on the shoulder, and in which the concave lines of growth are 
very visible. 
2. Genus — Murohisonia (d'Archiac and de Verneuil Mss.), Phillips, 1841. 
This genus is distinguished from Pleurotomaria, which it otherwise closely 
resembles, by its elongate turrited form and by the constant absence of an 
umbilicus. It occurs from the Silurian to the Trias. 
1. MuECHisoNiA TURBiNATA, ScJilotheim, sp. PI. XXIX, figs. 1 — 16, and PI. XXX, 
figs. 1—12. 
1821. MuEiciTES TUEBiNATUS, ScJilotheim. Petref., p. 145. 
1827. BxJCCiNUM SPiNOSUM, Sowerhy. Min. Conch., vol. vi, p. 128, pi. dlxvi, fig. 4. 
1827. TuEEiTELLA ABBEETiATA, Sowerhy. Ibid., vol. vi, p. 125, pi. dlxvi, fig. 2. 
1830. Melanopsis coeonata, Himinghaus. Jahrb. f. Min., p. 231. 
1832. Tueeitella coeonata, Goldfuss. De la Beche's Handbook (German 
edition), p. 533. 
1834. Ceeithium antiquum, Steininger. Mem. Soc. Geol. Fr., ser. 1, vol. i, p. 367. 
1840. Schizostoma teicincta, Miinster. Beitr., pt. 3, p. 87, pi. xv, fig. 14. 
1 1841, Phillips, ' Pal. Foss.,' p. 98, pi. xxxvii, fig. 181. 
2 1872, Kayser, ' Zeits. Deutch. Geol. Gesell.,' vol. xxiv, p. 673, pi. xxvi, fig. 3. 
s 1840, Munster, ' Beitr.,' pt. 3, p. 86, pi. xv, figs. 11 a, b. 
