PLATE XXX. 



(The cost of this plate has been defrayed by the Carnegie Trust for the 



Universities of Scotland.) 

 Fig. 



1. Bothriolepis hydrophila, portion of a slab which was given by the late Rev. 



Dr. Anderson of Newburgh to the Highland and Agricultural Society, 

 and is now in the Royal Scottish Museum. On the right side is an 

 entire specimen, seen from the ventral aspect ; on the left is a sharp 

 impression of the dorsal surface of another, but wanting the " arms." 

 From Dura Den, near Cupar, in Fifeshire. 



2. Bothriolepis hydrophila. Nearly perfect specimen of the dorsal surface of 



the head and carapace. From the same locality, and also belonging to 

 the Royal Scottish Museum. 



3. Anterior median dorsal plate of a small Bothriolepis, from Clashbennie, in 



Perthshire, and which seems in all probability to be referable to 

 B. hydrophila. Roughly figured by Fleming in 1831 (see page 126). 

 Fleming Collection, Royal Scottish Museum. 



4. Bothriolepis macrocephala. One of Sir Philip Egerton's types, and already 



figured by him (see page 128). Egerton Collection, British Museum 

 (Natural History). From Farlow, Shropshire. 



5. The same species — body, with pectoral appendages, seen from the ventral 



aspect. Farlow, Shropshire. Weaver-Jones Collection, British Museum 

 (Natural History). 



6. The same species, ventral aspect. This is the second of the type specimens 



already figured by Sir Philip Egerton (see page 129). From Farlow. 

 In the British Museum (Natural History). 



All the figures on this plate are of the natural size. 



