﻿246 R. Etheridge^ Jun. — Contributions to British PalcBontology. 



Edinburghshire. Mr. C. W. Peach has collected A. Scotica from 

 shale above the Burdiehouse Limestone at Straiten Oil-shale Mines, 

 near Burdiehouse, and from shale interbedded with trap on Inch- 

 Iceith Island, Firth of Forth. Mr. J. Bennie has obtained the 

 species at numerous localities in the oil-shale ground to the west of 

 Edinburgh, including Straiten Oil-shale Mine, and I have found 

 it at the first quarry east of the Binn Hill, Burntisland, Fife. 

 It was communicated to me by Mr. J, Linn, from shale obtained 

 at Middleton Pit, Uphall, Edinburghshire. These localities are all 

 in the Cement-stone Group, near the horizon of the Burdiehouse 

 Limestone. Both Mr. J. Henderson (Edinb. Geological Society) 

 and Mr. Bennie have found it sparingly in a lower horizon of the 

 Cement-stone Group than the Burdiehouse Limestone, viz. the 

 Wardie shales, in the Water of Leith, at Kates-mill, near Edinburgh. 



Genus Sanguinolites, M'Cov, 1844. (Synopsis Carb. Foss. Ireland, 

 p. 47 ; Brit. Pal. Foss. p. 276.) 



Sangiiinoiites '? Abdenensis, sp. nov. ? Plate XII. Figs. 9-11. 



Sp. Chars. — Transversely elongated ; two and a half times as long 

 as high. Anterior side short, rounded ; posterior side produced, 

 margin subtruncate in its upper part, rounded below. Dorsal 

 and ventral margin almost parallel, the former long and straight, 

 the latter with a very little shallow sinus in it a little posterior to 

 the umbenes ; the latter are anterior. Diagonal ridge faintly marked ; 

 jDOsterior slope scarcely defined from the body of the shell. Surface 

 ornamented with concentric lines parallel to the margins, which 

 leave little or no trace on the posterior slope of casts. 



Ohs. — I have provisionally given the above name to a shell which 

 has been found in considerable quantities, at one locality, always as 

 casts. Its generic affinities are doubtful, but I refer it to Sanguinolites 

 partly from its general form, and also because there is an indication 

 of an inflected hinge-margin. S.7 Ahdeneyisis appears to be allied to 

 6'. angustatus, PhilL,' but uniformly differs in size, and possesses 

 a shorter anterior end, whilst the posterior slope, although usually 

 smooth in the casts, now and then exhibits the remains of concentric 

 strige passing across it. The shell also appears to have some affinity 

 with Sanguinolites discors, M'Coy;^ but in addition to being dis- 

 tinguished by the previously mentioned characters, the much 

 straighter ventral margin of our shell may be noticed, and the 

 much coarser and more regular marking in S. discors, so far as an 

 opinion can be formed from casts only. S. Abdenensis is at first 

 sight not unlike S. plicatus, Portlock,^ more especially M'Coy's 

 figure of the latter.* However, our shell is more transversely 

 elongated, and is not so high a shell in proportion to its length as 

 S. jMcatus, and there is no trace of the sharp angle formed by the 

 junction of the posterior and dorsal margins. The great abundance 



1 Geol. York., 1856, vol. ii. p. 208, t. 5, f. 2. 



2 Synop. Carb. Foss. Ireland, 1844, p. 49, t. 8. f. 4. 



3 Geol. Report, Lord., 1843, p. 433, t. 34, f. 18. 

 ■> I.e. p. 49, t. 10, f. 3a and ^. 



