On some Cretaceous Clupeoid Fishes. 489 



would doubtless be above the base of the pectorals, as recorded 

 by Jordan in Mitsukun'na. Another specimen (Brit. Mus. 

 no. P. 4769) sliows that the teeth in S. Lewisi are about as 

 numerous as in Mitsuhurina Owstoni, while, as in the latter 

 species, those at the mandibular symphysis are slio'htly 

 larger than those at the front of tiie upper jaw. All tlie 

 fins are known in the two fossil species from Mount Lebanon 

 except the anterior dorsal ; and on comparing the figure of 

 such a specimen as B. M. no. P. 4020 * with that of the 

 recent fish given by Jordan, it will be observed that the 

 differences in proportions are not of greater than specific 

 value. The arrangement of the basal cartilages of the fins, 

 so beautifully represented by Jordan, is unfortunately not 

 distinct in any of the Lebanon fossils; nor is there any clear 

 evidence of the claspers. I'he dense shagreen seems to be 

 similar in the recent and fossil forms. 



The type specimen of Mitsuhurina Owstoni measures 

 slightly more than a metre (42 inches) in length, and is 

 described as apparently young. The known specimens of 

 Scapajiorhynchus Lewisi cannot have attained a greater 

 length than 0*5 ra., while the only complete specimen of 

 S. elongaius measures about 0'65 m. in length. Some of 

 the other species, however, represented in Cretaceous forma- 

 tions solely by their teeth, evidently attained considerably 

 larger dimensions, and must have been very much larger even 

 than the Japanese fish now captured. In Cretaceous seas it 

 was evidently a dominant type among the predaceous 

 sharks. 



LXVIL — Note on some Cretaceous Clupeoid Fishes loith Pecti- 

 nated Scales (Ctenothrissu and Pcieadoberyx). By A. 

 Smith WoodwakDj F.L.S. 



A RECENT detailed study of the so-called Berycidaj of the 

 Cretaceous period has led to the recognition of several allies 

 of the herrings among them. There is evidence of at least 

 two genera, whose osteulogical characters necessitate their 

 reference tu the family (Jlupcida3 as defined in Dr. Gunther's 

 British Museum Catalogue. Both are characterized by large 

 pectinated scales, like those of the existing Clupeoid genus 

 Llrevoortia'\ ; but neither exhibits any ventral or dorsal ndge- 



* A. S. Woodward, ' Catal. Foss. Fishes B.M.' parti. (^1689), pi. xvii. 

 tig. 1. 



t liill, Proc. Acad. Nat. Sci. Philad. 18G1, p. 37; Jordan and Ever- 

 mann, " Fishes of North and Middle Amei'.ca, ' iiull, \J.i5, National 

 Museum, no. 47 (189(3), p. 4iJ3. 



