Miscellaneous. 355 



ma), while no certain remains have been detected in the Syrian 

 beds. Belonostomus, however, is common to the two formations, one 

 species having been described from Mount Lebanon under the name 

 of Rhinellus laniatus. 



Of Physostomous Teleosteans, the great early families represented 

 in the Chalk of England and the Upper Cretaceous of North America 

 by Portheus, Ichthyodectes, Protosphyrcena, and PacJiyrJiizodus are 

 quite unknown in the deposits of Mount Lebanon ; but in the latter 

 locality Enchodus is abundant, having been described under the 

 synonym oi Eurygnathus , and this is accompanied by a closely-allied 

 genus, Eurypholis, only differing in the possession of a few dermal 

 scutes. The English Pomognathus may also be regarded as repre- 

 sented at Mount Lebanon, for the so-called Phylactocephaliis merely 

 differs in the presence of extremely delicate minute scales, which 

 would not be preserved in a matrix of the nature of the Chalk ; and 

 Aspidopleurtis (Mount Lebanon) possesses scutes undistinguishable 

 from the detached examples long known in the English Chalk under 

 the name of Prionolepis. Bercetis, also, is met with abundantly in 

 the Syrian beds, being described under the synonym of Lej^totrachelus. 

 Among Elopine Clupeoids, some undeseribed forms occur in the 

 English Chalk, and one from Mount Lebanon has been erroneously 

 assigned to the genus Clupea (' C. Lewisii ') ; and the supposed 

 Salmonoid, Osmeroides, is common to the two formations, though 

 inferior in size at the last-named locality. In the Syrian deposits, 

 however, there are many more specialized Physostomi, such as 

 CTieirothrix, Spaniodon, 02)istopteryx, lihmeUns, Scomhrodupea, 

 Diplomystus, and Chqjea, of which no traces appear to be discover- 

 able in collections of English Chalk fossils. Among Physoclystous 

 Teleosteans but few genera are common to the two formations under 

 comparison. Hoplopteryx, with perhaps Beryx, represents the 

 Berycidae in both localities ; but only a single imperfect specimen 

 from the English Chalk can yet be assigned to any higher type, 

 namely, Platax (?) nuclicdis. At Mount Lebanon more specialized 

 Physoclysti are numerous, as Platax, Imogaster, and Pycnosterinx ; 

 although to the latter have been erroneously assigned certain ex- 

 traneous forms, including at least one well-marked Berycoid, the 

 so-called Pycnosterinx Lewisii. 



The conclusion is thus arrived at, that in those respects in which 

 the Lebanon fish-fauna dift'ers from that of the English Chalk, it 

 exhibits greater specialization. Considered alone, therefore, it is 

 distinctly oi a more modern type than the latter, although the beds 

 in which it occurs are regarded, from other evidence, as being of 

 Senonian or even Turonian age. 



On Bucklandium diluvii, Eonig, a Siluroid Fish from the London 

 Clay of Sheppty *. By A. Smith Woodwaed, E.G.S., F.Z.S. 



In his weU-known ' Icones Eossilium Sectiles,' pi. viii., No. 91, 



* Abstract of paper read before Section C, British Association, Bath, 

 September 1888. 



