696 DR RAMSAY H. TRAQUAIR ON THE DISTRIBUTION OF FOSSIL FISH-REMAINS 



Upper Limestone Group. 



South Parrot Coal Shale. — Passing upwards, we reach the Upper Limestone Group 

 at the " Index " Limestone (No. 4 in the section, PL II.). Lying between this lime- 

 stone and No. 5, the " Calmy " or " Arden," but nearer to the former, is the South 

 Parrot Coal-seam, at present extensively wrought at Niddrie. The roof-shale is of a 

 glossy black colour, and contains here and there fragments of Lepidodendron, and on 

 one piece I detected a Lingula. In general appearance, colour, and texture it closely 

 resembles some Upper Carboniferous fish-bearing shales, both Scotch and English ; but 

 how different are the species of fishes contained in it ! The following have been 

 obtained up till now : — 



Diplodus parvulus. Cynopodius crenulatus. 



Pleuracanihus elegans. Euctenius elegans. 



„ horridulus. Rhizodus HMerti. 



„ fastigiatus, Davis. „ ornatus. 



„ sp. Strepsodus striatulus. 



Dicentrodus bicuspidatus, Traq. „ sp. 



Callopristodus pectinalus (Ag.). Ctenodus interruptus. 



Gyracanthus, sp. Sagenodus quinquecostatus. 



Aganacanthus striatulus. Gonatodus parvidens. 



Bphenacanthus serrulatus. Monichthys pectinatus. 



Tristychius arcuatus. Rhadinichthys, sp. 



„ minor. Nematoptychius Greenocki. 



Euphyacanthu& semistriatus. Ettrynotus crenatus. 



Now, though a considerable thickness of strata, including one truly marine limestone, 

 intervenes between this South Parrot Coal Shale and the Borough Lee Ironstone below, 

 we are at once struck by the similarity of the two lists of fishes. • Of the twenty-three 

 named species occurring in the list given above, twenty-one are also found in the 

 Borough Lee bed, the two not so accounted for being Euphy acanthus semistriatus and 

 Rhizodus ornatus, both of which occur, however, in the Calciferous Sandstone Series 

 below. The three undetermined species are : a Gyracanthus, represented by species 

 too imperfect and eroded for correct identification ; a Strepsodus, indicated by teeth 

 which resemble in shape and markings those of the Upper Carboniferous S. sauroides, 

 Binney, but probably new ; and a small Rhadinichthys. 



MILLSTONE GRIT. 



No fish-remains have been found in the strata belonging to this group in the 

 Edinburgh district, nor in Scotland in general, so far as I am aware, 



COAL MEASURES. 



The productive Coal-bearing strata of the Edinburgh district above the Millstone 





