230 A. SMJTH AVOODWARD. 



third is ornamented by still finer ridges, which are concentric 

 and bend sharply downwards in the postei'O-superior portion 

 (figs. 2, 5). The principal flank-scales (fig. 3) seena to have 

 been about as wide as deep in their exposed portion, and the 

 number of their pectinations vax'ies from six to twelve. These 

 pectinations are longest in the upper part of each scale and 

 gradually shorten towards its lower border (figs. 4, 5) . In an 

 imperfectly preserved oblong scale (fig. G)^ presumably from 

 the tail, they are comparatively small and delicate, eight .in 

 number. In some of the small ventral and dorsal scales (fig. 

 7) the pectinations are relatively large and only four or five 

 in number. Many of the larger oblong dorsal and ventral 

 scales have the antero-superior angle much produced, and the 

 peg-and-socket articulation especially large (fig. 1). 



With the scales are associated other fragments of the fish, 

 but all are unsatisfactory. A few anterior fin-rays (fig. 8) 

 may be compared with the basal part of the pectoral fin in 

 Acrolepis. 



Coarsely pectinated scales, nnicli resembling those from 

 Intombi Camp, have already been discovered in the Karoo 

 Formation of Cape Colony/ and in the Permo-Carboniferous 

 of Rhodesia- and Nyassaland.-' Of these, the scales from 

 Rhodesia are most nearly similar to the Xatal specimens now 

 described ; and as the former are definitely proved to belong 

 to the Palteoniscid Acrolepis, the latter may also be ascribed 

 to the same genus. The Rhodesian and Natal scales appear^ 

 indeed, to be almost identical in ornament and pectination, 

 only differing a little in shape. In most of the scales of the 

 Rhodesian Acrolepis molyneuxi (fig. 9) the upper and 

 lower borders are sigmoidally bent, while in the new scales 

 they are gently curved or nearly straight. The scales from 



' Acrolepis (?) digitata ^. S. Woodward, ' Catal. Foss. Fishes Brit. 

 Mus.; pt. ii (1891), p. 508, PI. xv, fig. 4. 



- Acrolepis molyneuxi J.. S. Woodivard, ' Quart. Jouru. Geol. Soc,' 

 vol. lix (1903), p. 285, PI. xx. 



•* Colobodus africanus R. H. Traqaair, ' Quart. Journ. Geol. 

 Soc'vol. lxvi(1910), p. 249,P1. XIX,figs. 1-5; Acrolepis (?) africana 

 E. If. Traqiuiir, in H. Drnmmond, 'Tropical Africa' (1888), p. 194. 



