THE LOWER DEVONIAN FISHES OF GEMUNDEN. 739 



opening, but the divisions between the four succeeding narrow elevated scales have not come out so well in 

 the plaster cast from which the photograph was taken. In the proximal part of the tail the scales are covered 

 by pyritous deposit, but further back they are well seen, their angular contour and bold sculpture being 

 strongly marked. The commencement of the line of ventral fulcra is clearly exhibited ; those of the dorsal 

 set are somewhat disturbed proximally, but their form and sculpture are very sharply denned. The original 

 specimen is in the collection of the Prussian Geological Survey in Berlin. 



Fig. 2. This is a tail of the same species, with the caudal fin truncated and the lateral scales covered 

 witli a layer of pyrites, except on a small area behind ; the fulcra are, however, well seen, and we may note 

 their short, stout form at the commencement of each series, as well as the greater size of those on the dorsal 

 aspect. Specimen in the Edinburgh Museum of Science and Art 



Tlate VI. 



Fig. 1. Coecodeus angustus, Traquair, seen from the ventral aspect (see text, p. 732). The only known 

 specimen, and preserved in the Edinburgh Museum of Science and Art. 



Fig. 2. The same specimen worked out from the dorsal aspect {see text, p. 732). 



Fig. 3. Hunsruclcia /irohJemafica, Traquair, portion of vertebral column (see text, p. 736). Specimen in 

 the Collection of the Prussian Geological Survey, Berlin. 



Plate VII. 



Fig. 1. Gtmilndina Stiirtzi, Traquair, ventral aspect (see p. 73-1) Specimen in the Edinburgh Museum 

 of Science and Art. 



Fig. 2. The same specimen worked out from the other side (see p. 737). 



TRANS. ROY. SOC. EDIN., VOL. XL. PART IV. (NO. 30). 5 S 



