PLATE XXIX. 



(The cost of this plate was defrayed by the Carnegie Trust for the Universities 



of Scotland.) 



Fig. 



1. Bothriolepis leptocheirus, premedian plate. Heads of Ayr, in the Hugh Miller 



Collection. 



2. Fragment of the articular extremity of a pectoral appendage, outer side, 



showing the two articular plates meeting over the proximal end of the 

 external marginal. Same locality and collection. 



3. Eight anterior ventro-lateral plate, external surface. Attached to it is the 



proximal portion of the corresponding pectoral appendage, but split 

 open, so as to show the internal surface of its dorsal elements. 



4. Portion of rock showing an articular plate of the pectoral appendage and an 



imperfect posterior median dorsal. The latter is lying so that its 

 posterior extremity points upwards. Same locality and collection. 



5. Terminal segment of a pectoral appendage. 



All the figures on this plate are of the natural size, and the originals are the 

 property of the Royal Scottish Museum. 



