Fossil Fishes of the Upper Karroo Beds of Soutli Africa. 261 



bones in the anal." In the Paloeoniscid fish I am describing there 

 is pretty conclusive evidence that there is only one set, unless the 

 other be extremely rudimentary. 



Appcndicular Skeleton. In the type specimen the shoulder girdle 

 is only represented by the upper part of the supraclavicle and the 

 post-temporal, and these are very badly preserved. In the second 

 specimen much of the shoulder girdle is seen in good condition. 

 The supraclavicle is of large size, and the lateral line passes over the 

 upper part of it. The postclavicle is small, but distinct. The 

 clavicle is well developed. The rays of the pectoral fin are dis- 

 tinctly articulated distally, but it is not clear whether the proximal 

 halves are also articulated. 



The pelvic fin is seen in the type specimen, but it is very im- 

 perfectly preserved. 



Unpaired Fins. The dorsal fin begins a little in front of and ends 

 opposite the middle of the anal fin. It is large and triangular, and 

 is formed by about 40 rays, of which the 8th is the longest and the 

 first 3 very short. They are articulated throughout their whole 

 length. Most of the rays divide near their middle and again at the 

 beginning of their distal fourth. A series of small fulcra support the 

 front of the fin, and one or two enlarged scales lie in front of 

 the anterior end. 



The anal fin has a longer attachment than the dorsal, and the 

 rays are rather longer. They are about 52 in number, and the 8th 

 and 9th are the longest. Like those of the dorsal fin, they are 

 articulated and branch dichotornously. 



The caudal fin is somewhat imperfectly preserved. It is probably 

 fairly deeply bilobate, but neither the upper nor the lower lobe is 

 complete, and the two portions are artificially separated from 

 each other. The lower lobe is w r ell developed, the rays being 

 supported by large haemal spines. The upper caudal lobe is well 

 developed. 



Squamation. The scales of the body are small and rather thin. 

 Those of the anterior part, which are better developed, are rhom- 

 bohedral, and ornamented with 8 or 9 little irregular ridges which 

 pass backwards and slightly downwards. The scales of the ab- 

 dominal region are very narrow and closely imbricated. Those of 

 the posterior part of the body are thinner and smaller. On the 

 upper lobe of the tail the scales are again thicker and form long, 

 narrow rhomboids ornamented by a few oblong ridges passing 

 backwards. 



A few enlarged scales lie in front of the dorsal fin, but apparently 



