258 Dr. R. H. Traquair on Fossil Fishes 
said by him to be “situated on each side of the middle 
part of the animal, and generally coloured yellow or red 
(primitive kidneys?)” (Ann. & Mag. Nat. Hist. Nov. 1874, 
. 383). 
‘ i ee add that all these observations were made on living 
Linulus polyphemus, in the laboratory of the Anderson School 
of Natural History, at Penikese Island, Mass. 
XXXIV.—On some Fossil Fishes from the Neighbourhood of 
Edinburgh. By R. H. Traquair, M.D., F.G.S., Keeper 
of the Natural-History Collections in the Edinburgh 
Museum of Science and Art*. 
[Plate XVL] 
[. Nematoptychius Greenockii, Agass., sp. 
EIGHT years ago I published a paper} giving a detailed 
description of a fish from the Wardie Shales, which I con- 
sidered, and still do so, to be the Pygopterus Greenockit of 
Agassiz. Since that time remains of the same fish have 
turned up in many other localities near Edinburgh, showing 
that it enjoyed arange extending upwards into the true Coal- 
measures. Proceeding upwards from the Wardie Shales, it 
occurs in the horizon of the Burdiehouse Limestone, a speci- 
men in the British Museum (no. 45867) from Burntisland, in 
Vifeshire, displaying numerous scales and bones of this species, 
commingled with similar relics of Hurynotus crenatus. Nume- 
rous specimens also in the Edinburgh Museum of Science and 
Art, and in private collections, show its not uncommon pre- 
sence in the “ Edge-Coal”’ strata of Gilmerton and Loanhead, 
and in the Upper Coal-measures of Shawfair. With the ex- 
ception of a head, with the anterior part of the body, from Gil- 
merton, belonging to Mr. Somervail of Edinburgh, and an 
entire though badly preserved specimen from Woolmet, near 
Edmonston, in the Museum of Science and Art, all the speci- 
mens as yet procured from beds above the Wardie Shales are 
very fragmentary ; yet some of the fragments, from the softer 
nature of their matrix, afford us some details regardmg the 
* Communicated by the Author, having been read before the Geolo- 
gical Society of Edinburgh, 4th February, 1875. 
+ “Description of Pygopterus Greenockit, Agass., with Notes on the 
Structural Relations of the Genera Pygopterus, Amblypterus, and Hury- 
notus,” Trans, Royal Soc, Edinb. vol. xxiv. 1867, pp. 701-715, pl. xlv. 
