Achanarras Revisited, 279 
XX. Achanarras Revisited. By R. H. Traquatr, M.D., 
LED FERS. 
(Read 20th December 1893.) 
In December 1889 I first brought the subject of the fossils 
found in the Old Red Sandstone at Achanarras Quarry in 
Caithness before the Society, but not having at that time 
visited the locality, I judged it better to defer publication of 
the paper. In August 1890 I proceeded to Achanarras along 
with my friend Mr John Gunn, now our Secretary, and 
having seen the place, and hunted for fossils among the 
débris, as well as having received for the Museum a dona- 
tion of specimens from the Caithness Flagstone Company, I 
revised my previous paper and published it in the Annals 
and Magazine of Natural History for December of that year. 
In that paper I recorded the occurrence there of thirteen 
species of fossil fishes, of which some had not previously 
been found in Caithness, while one, which I named Palao- 
spondylus Gunni, was new to science, and of the greatest 
interest from a zoological point of view. 
Again in 1891 I visited the quarry, and from material then 
collected, supplemented by specimens obtained from Mr 
Donald Calder of Thurso, I furnished the Society with a paper, 
entitled, “A Further Description of Palawospondylus Gunni,” 
which was published in the last fasciculus of our Proceedings. 
But it was not till the summer of the present year that I 
had the opportunity of seeing the quarry being actually 
worked, and pumped clear of water, which in ordinary con- 
ditions covers the “bottom” rock, in which the fossils are 
most abundant. Here I must return my best thanks to the 
directors, secretary, and managers of the Caithness Flagstone 
Company for the kindness with which they afforded me 
every facility for examining the rocks exposed in the section; 
and to the Company the Edinburgh Museum is also indebted 
for another large donation of fossils, both from Achanarras and 
from Spital, those from the last-named locality including the 
unique specimen of Cephalaspis magnifica, which I have just 
brought before you in a separate paper. The results of this 
VOL. XI. uy 
