IN THE CARBONIFEROUS ROCKS OF THE EDINBURGH DISTRICT. 689 



The species noted in the following lists are all in the Edinburgh Museum of Science 

 and Art, or in my private collection, with the exception of a few from the marine beds 

 of the Lower Limestone group, which are in the collection of the Geological Survey 

 of Scotland. For leave to include the latter I have to record my thanks to the Director 

 of the Survey, Mr J. J. H. Teall, F.R.S. 



LISTS OF SPECIES. 



Calciferous Sandstone Series. 



Beds below the Horizon of the Craigleith and Granton Sandstones. 



No fish-remains whatever have been found in the Craigmillar or Red Sandstone 

 Group, which seems to stand on the border-line between the Lower Carboniferous and 

 the Upper Old Red. Nor have any occurred in the sandstones which in this district 

 are reckoned by the Geological Survey to the last-named formation (Upper Old Red). 



Ballagan Beds. — Scales referable to Rhizodus, along with a few of undeterminable 

 palseoniscid type, were found in 1898 by Mr D. Tait, of the Geological Survey, in 

 rocks exposed during excavations for the foundations of the new Scotsman Offices at 

 the North Bridge, and are now in the collection of the Survey. 



Arthur Seat Group. — A bed of stratified ash underlying basalt at St Anthony's 

 Chapel has long been known to contain remains of fishes as well as of plants. In Hugh 

 Miller's Testimony of the Rocks mention is made of the finding there of a tooth of a 

 " carboniferous Holoptychius " (=Rhizodus), by the late Dr MacBain ; and in the 

 Geological Survey Memoir, on Sheet 32 (1861), reference is also made to the occurrence 

 of " scales of Rhizodus" in the same bed. The late Mr David Grieve, of Edinburgh, 

 had a considerable collection of these remains, but they were unfortunately lost sight of 

 after his death ; and as none have been collected since, it is not possible to give a 

 critically determined list of them. 



Abbey Hill Shales. — The Arthur Seat beds are overlaid by what are termed the 

 Abbey Hill Shales, from which scales of Eurynotus and Rhadinichthys, found in 

 boring for water at Abbeyhill, were recorded by Mr John Henderson in 1880.* 

 Recently Mr J. G. Duncan has found in them, also at a cutting for a drain, a few 

 palseoniscid scales (Elonichthys), and also a fragmentary plate of Megalichthys. 



Craigleith and Granton Sandstones. — On a piece of dark indurated shale from 

 strata at Lochend, which are supposed to belong to this horizon, is a pretty well pre- 

 served specimen of Rhadinichthys ornatissimus (Agass.), an easily recognised palseon- 

 iscid fish, which is very characteristic of the Oil- Shale Group, and even extends into 



* Trans. Geol. Soc. Edin., vol. iv. p. 34. 



