IN THE CARBONIFEROUS ROCKS OF THE EDINBURGH DISTRICT. 691 



shire occur at a depth of 800 feet below the Burdiehouse Limestone, and are worked for 

 oil at Pumpherston and the Eoman Camp. 



In No. 3 seam, " curly," there is a comparatively thin band which contains the 

 following fishes : — 



Acanthodes, sp. Elonichthys Robisoni. 



Ctenodus interruptus, Barkas. Rhadinichthys carinatus. 



Mesopoma macrocephalum, Traq. Eurynotus crenatus. 



The smaller fishes are usually entire and beautifully preserved. Of Ctenodus 

 interruptus only one specimen has occurred, namely, a parasphenoid bone with attached 

 palatopterygoids and tooth-plates, for which the Museum is indebted to Major J. Pace 

 Cleghorne of Broxburn. 



Burdiehouse Limestone. — This well-known limestone, with which the name of 

 Hibbert will ever be associated, attracted notice in the course of the fourth decade of 

 last century on account of its fossil vertebrate remains. Such fossils were at the time 

 not much known from British Carboniferous rocks, and the Burdiehouse Limestone is in 

 consequence referred to in nearly every text-book of geology. It is still extensively 

 wrought at Burdiehouse village, but seems now to yield very little in the way of fishes. 

 Limestones of approximately the same horizon and containing similar fossils are or have 

 been worked at Raw Camps near Midcalder, South Queensferry, and Burntisland and 

 Starley Burn in Fife. 



At Burdiehouse itself the list is as follows : — 



Pleur acanthus, sp. Uronemus lobatus, Ag. 



Callopristodus pectinatus, (Ag.). Ctenodus, sp. scales. 



Gyracanthus rectus, Traq. Gonatodus, sp. 



Sphenacanthus semdatus (Ag.). Elonichthys Robisoni. 

 Tristychius arcuatus. „ striatus. 



„ minor, Portl. Rhadinichthys ornatissimus. 



Cynopodius crenulatus, Traq. „ carinatus. 



MegoMchthys laticeps, Traq. Nematoptychius Greenocki. 



Rhizodus Hibberti. Eurynotus crenatus. 

 „ ornatus, Traq. 



Remarks on Agassiz's species. — Agassiz's Palcconiscus striolatus and Pygopterus Bucklandi are 

 synonyms of Elonichthys Robisoni. His Ctenoptychius denticulatus is the same as his Ct. pectinatus 

 ( = Callopristodus, Traq.) Phyllolepis tenuissimus is, I believe, founded partly on scales of Rhizodus 

 Hibberti, partly on those of a large Ctenodus, probably Ct. intemiptus. Ptychacanthus sublcevis is 

 clearly founded on a worn specimen of Tristychius arcuatus, and the specimens referred by Agassiz 

 to Gyracanthus formosus have been erected by the present writer into a separate species, G. rectus, 

 Traq. Cladodus Hibberti, CI. parvics, Diplopterus Robertsoni, Ctenodus Robertsoni, and Pygopterus 

 Jamesoni are named from Burdiehouse in the "Tableau Generale," but not described ; and as the 

 originals seem to have been lost, the names must simply drop. The same fate must, I fear, also 

 befall Diplodus minutits, for the description and figures are not sufficient for accurate identification, 

 and the originals seem also to have been lost. 



Mr Salter observes in his "Description and List of Fossils" from the district 



