E. T. Newton — Onychodus in the Old Red of Forfar. 51 



II.— Note on a New Species of Onychodus from the Lower Old 

 Eed Sandstone of Forfar. 



By E. T. Newton, F.G.S. 



THE occurrence in the Ledbury " Passage-beds " of a united series 

 of teeth referable to the American type of fossil fishes named 

 by Prof. Newberry Onychodus, was made known by Mr. A. Smith 

 Woodward in the Geological Magazine for November, 1888; and 

 in the British Museum Catalogue in 1891. Since then I have 

 met with another example of the genus among the stores of the 

 Geological Survey, which, as it seems to be quite distinct from the 

 Herefordsliire species, and is from a distant locality, deserves to be 

 placed on record. 



Onychodus scotieus, n. sp., from the Old Eed Sandstone of Forfar. Presented to 

 the Museum of Practical Geology by James Powrie, Esq., F.G.S., of Reswallie. 



The specimen consists of a series of teeth from the Lower Old 

 Eed Sandstone of Turin Hill (?), Forfar, and has been presented to 

 the Museum of Practical Geology by Mr. James Powrie, of Eeswallie, 

 who has done so much to extend our knowledge of the fauna of 

 these rocks. This series of teeth, is preserved in a shaly layer 

 covering a small block of hard grey sandstone ; and the shale having 

 been split open, the fossil itself has been broken through from end 

 to end, one half being retained in each piece of shale ; portions of 

 some of the teeth, however, have fallen out. There are eight teeth 

 placed one before another in a single row, with their bases coossified 

 so as to form a rigid semicircular base, which measures about 

 9 mm. in a straight line from end to end. Two of the teeth 

 seem to liave been quite perfect when imbedded in the shale ; but 

 the others are more or less worn down and rounded. The longest 

 and most perfect tooth is about 4 mm. in length ; and the shortest 

 nearly 3 mm. The basal portion, so far as one can judge from a 



