276 NOTES ON THE TERMIAN SYSTEM OF 



" To this list may be added (five errat.) a species of Melanice ? 

 less than half an inch long, with eight whorls; Hawthorne Hive. 

 (MS. Catalogue by Mr. J. Phillips.)" No specific name is ap- 

 l^lied to it. 



The next mention of it (unless the Turritella hiarmica^ Kutorga, 

 and the Murchisonia suhangulata, Vern,, be the same species), 

 and the first accompanied with a short description, figure, and 

 specific name, is by Dr. Geinitz in the " Versteinerungen des 

 deutsch. Zechsteingebirges," p. 7, tab. 3, figs. 9, 10. The short 

 description is in the following words: — 



Turbonilla Altenhwgensis, " a little tower-shaped snail, with 

 six or more rounded, smooth whorls," &c. 



Next, in the "Tyneside Catalogue," p. 240, it is thus charac- 

 terised : — 



" Turritella Phillipsii, n. s. Shell elongated^ narmw, 

 slightly tapering^ tiirreted ; spire imth twelve or more rounded 

 whorls, tvhich are rather convex and slightly flattened behind ; suture 

 deep ; inllar-lij) slightly angidated infi -ont ; aperture suborhicu lary An d 

 " T. Tunstallensis. Shell elongated conical; spire ivith eight ichorls, 

 ivhich are much rounded, smooth; sutw^edeep; aperture orbicular.^'' 



Notwithstanding the differences pointed out, after examining 

 a large series of specimens, I am now of opinion that the latter 

 shell is only a variety of the former. 



The next two notices of this shell are by Mr. King, " Cat. 

 Org. Remains," &c. p. 13, and " Perm. Mon." pp. 209, 210. In 

 both these works it has the following " diagnosis:" — ■ 



" LoxoNEMA fasciata, u. sp. A subulute, many-whorled, 

 smooth species, ivith tico or more dark-spiral bands, crossed by 

 others, on a light ground; its outer lip is inversely sigmoid^ 



If this " diagnosis" had not been accompanied with a figure, 

 I could not have identified it with the preceding shells ; but the 

 figure in " Perm. Foss." tab. IG, f. 30, establishes its relationship 

 to them without doubt, and at the same time it shows that Mr. 

 King's " diagnosis" of the species is incorrect. The general form 

 is not " subulate,'^ but turreted, or tower-shaped, as Geinitz 

 expresses it. The terms " dark-spiral" and " inversely sigmoid" 

 are not very intelligible. 



