480 Dr. R. H. Traquair on Fossil Fishes 



any other fish-bearing schist with which I am acquainted, 

 and to observe that they were finding their way into collec- 

 tions, even in London, though without the precise locality 

 being indicated. In the autumn of 1889 Achanarras was 

 visited by the officers of the Geological Survey of Scotland, 

 and I have received the kind permission of the Director- 

 General to examine a collection of fishes from it, presented 

 to the Survey by the Thurso Flagstone Quarrying Company, 

 who are the lessees of the quarry. It was not, however, until 

 the month of August of the present year that I had myself 

 the opportunity of visiting the spot. On this occasion, when 

 on a visit to Mr. Gunn and his family at Dale, which is 

 about two miles from Achanarras, I spent several days 

 exploring the debris of the quarry, and, besides many speci- 

 mens of the " baby Coccosteus " (Palceospofidt/Ius Gunnii), 

 Mr. Gunn and I discovered three examples of Diplacanthus 

 striatits, a species rare in the Caithness beds, besides several 

 specimens ot a species of MesacantJius and other fishes. Shortly 

 afterwards I received, for the Natural History Department of 

 the Museum of Science and Art, a large donation of Achan- 

 arras fishes from the Thurso Flagstone Quarrying Company. 

 I must also acknowledge my indebtedness for material to 

 Mr. James Reid, of Allan House, Blairgowrie, who for some 

 years back has greatly interested himself in collecting the 

 fossil fishes and plants of the Old Red Sandstone, and to 

 Mr. Munro, of Achanarras Farm ; and I have carefully looked 

 through the collection made by Mr. Edwards, of Leigh, near 

 Manchester, at present deposited in the museum at Owens 

 College. 



List. 



1. Dipterus Valenciennesii (Sedgw. & Murch.) 



2. MesacanthuSj sp. 



3. Cheiracanthus Murchisoni^ Ag. 



4. Diplacanthus stnatus, Ag. 



5. Rhadinacanthus longispinus (Ag.). 



6. Pterichthys Miller i^ Ag. 



7. Coccosteus decipiens^ Ag. 



8. Homosteus Milleri^ Traq. 



9. Glyptolepis paucidens (Ag.). 



10. Osteolepis macrolepidotus, Ag. 



11. Diplopterus Agassizii, Traill. 



12. Cheirolepis Trailli, Ag. 



13. Palceospondylus Gunnii^ Traq. 



