52 0?? Bencdenius denecnsls, Traquair. 



smaller, the posterior half of its base opposed to the small 

 anal. Caudal fin two ninths of the total length, its lower 

 lobe strongly notched. Dermal papillse keeled and acutely 

 pointed. ITniform grey above, white beneath ; tins grey, 

 caudal edged with white. 



Total lengtli 340 millim. 



A single male specimen of this remarkable dog-fish was 

 obtained off the coast of Natal in about 40 fathoms, and sent 

 to me by Mr. F. J. Queckett, Curator of the Durban Museum, 

 to whom I have much pleasure in dedicating the new species. 



EXPLANATION OF PLATE IV. 



Scyllior/ahiis Qnecketti, ^ nat. size, with lower view of bead, nat. size, 

 and enlarft-ed view of mandibular teeth. 



Yin. — Further Bemarks on the Carhoniferoiis Ganoid, 

 Benedenius deneensis, Traquair. By G. A. Boulenger, 

 F.R.S. 



Not long ago I bad the privilege in these ' Annals ' * of 

 adding to our knowledge of the rare fish Benedenius deneensis, 

 of which s])ecimens had been obtained from the original 

 locality, a black-marble quarry at Denee, in Belgium, and 

 deposited in the natural history collection of the Abbey of 

 Maredsous. Quite recently yet another specimen has been 

 brought to light in another quarry at Salet, near Dende, and 

 having been acquired for the Maredsous collection, the Rev. 

 Dom G. Fournier, O.S.B., has again been so kind as to 

 place it in my hands for examination. 



This new specimen appears to have been a little larger 

 than the one previously figured in these ' Annals ' (pi. ix.), 

 measuring 240 millim. to the base of the anal fin, the caudal 

 region not being preserved. Its bones and scales are in so 

 disturbed a condition that iev: points call for special comment ; 

 but its chief interest lies in the fortunate fact that it affords 

 the first definite information as to the shape of the teeth, and 

 that, although the head cannot be described, the general 

 proportions of the moutli leave no doubt as to the correctness 

 of Dr. Traquair's allocation of Van Beneden's supposed 

 Palceoniscus to the Platysomidte. The length of the gape in 

 this specimen appears to have been only about 25 millim. 

 The teeth in both jaws may be said to be intermediate in 

 shape between those of Mesolepis and those of Eurysonius^ ; 



* Ser. 7, vol. iv. 1899, p. 445. 



t Cf. Traquair, Tr. K. .Soc. Ediub. xxix. 1879, pi. iv. 



