112 



DK RAMSAY H. TRAQUAIR ON FOSSIL FISHES COLLECTED BY 



The original specimen showed the general shape of the body and the character of 

 the squamation, some of the osteological details of the head, the dorsal fin, and a few 

 traces of the anal. Another specimen, subsequently obtained by the late Mr T. Stock, 

 and of which the counterpart is now in the Royal Scottish Museum, shows distinctly 

 the pectoral and ventral fins, but only traces of the anal, while the caudal is again 

 wholly wanting, having been cut off by the edge of the ironstone nodule in which the 

 fish is contained. 



But quite a number of specimens of Wardichthys cyclosoma have turned up at 

 Gullane, and in several of these the caudal as well as the anal fin is well shown, so that 

 now the material has been obtained on which to construct the restored figure, which I 

 herewith append. The generic diagnosis may also be amended as follows : — 



Fig. 1. — Restored outline of Wardichthys cyclosoma, Traquair. pa., parietal; /., frontal; sq., squamosal; pt.f., post- 

 frontal; op., operculum; s.op., suboperculum ; mx., maxilla; p.t., post-temporal; s.cl., supraclavicular; cl., clavicle; 

 p., pectoral ; v., ventral ; d., dorsal ; a., anal ; c, caudal. 



Genus Wardichthys, Traquair. Body deep, nearly circular in profile ; ventral fins 

 present, situated nearly exactly between the pectorals and the anal. Dorsal fin small, 

 arising considerably behind the top of the rounded arch of the back, and terminating 

 near the commencement of the tail pedicle ; its base somewhat extended in proportion 

 to its height. Anal, placed a little further back than the dorsal, short based, triangular- 

 acuminate in form. Caudal comparatively small, heterocercal, deeply cleft. All the 

 fins with distinct fulcra ; their rays closely set and closely articulated. Cranial 

 osteology allied to that of Mesolepis, but the dentition is still unknown. Scales of 

 the middle of the flank high and narrow, more equilateral behind and towards the 

 dorsal and ventral margins ; covered area broad, exposed surface ornamented by a close 

 tuberculation, the tubercles often coalescing into short ridges ; azygous scales in front 

 of the dorsal and anal fins, with well-marked backwardly-directed spur-shaped points. 

 Only species, W. cyclosoma, Traq. 



