THE GEOLOGICAL SURVEY OF SCOTLAND NEAR GULLANE. 113 



The new points here brought out are — the presence of pectorals and ventrals, and 

 the contour of the anal and caudal fins. Though the dentition is still unknown, the 

 affinity of the genus to Mesolepis is obvious, as already remarked in my paper on the 

 Platysomidse, but the small size of the dorsal fin and its backward position are marks 

 of sufficient importance to justify the validity of Wardichthys. 



For purposes of comparison I add a restored outline of Mesolepis, of which only the 

 head part has been previously published in my paper on the Structure and Affinities of 

 the Platysomidse. 



All the specimens from the Gullane locality in the Survey Collection are from 

 bed a, and represent fishes from 2 to 4 inches in length. From bed c (the " crustacean " 

 bed) Mr F. H. Butler, of London, obtained a nearly perfect specimen, now in 



Fig. 2.— Restored outline of Mesolepis scalaris, Young, from the North Staffordshire Coalfield, e., dermal ethmoid - 

 »., nasal opening; p./., pre-frontal ; p.op., preoperculum ; s.o., suborbital; mn., mandible; p.mx., premaxilla. Other 

 lettering as in fig. 1. 



the British Museum. I am indebted to Dr A. S. Woodward for the privilege of 

 examining this specimen, the largest which I have seen, as it measures a fraction over 

 5 inches in length. 



Conclusion. 



Having now gone over, from a zoological standpoint, the fishes collected at this 

 interesting locality, it remains for me to say a few words regarding their interest to the 

 geologist. 



It is, of course, for the officers of the Geological Survey to settle the horizon of 

 these fish-bearing beds by correlating the various lights thrown on them by stratigraphy 

 as well as by palaeontology, and here it must also be remembered that they contain 

 other fossils besides fishes. Nevertheless, it may be permitted to me to point out the 



