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THE AMEBIC AN NATURALIST [Vol. XLIV 



likely that this view of the case is the correct one. We may 

 notice, however, that Kafinesque 's name I sums is much older 

 than Oxyrhina. Carcharodon rectus, of Agassiz, and C. bran- 

 tie ri, of Jordan, are regarded as identical with C. megalodon, 

 the giant shark of the Miocene fossil beds about the Atlantic. 

 C. arnoldi, of Jordan, and C. riversi, of Jordan, Leriche regards 

 as identical with the living C. rondeleti, for which the older 

 name is C. carcharias. This may possibly be true of the riversi, 

 but the arnoldi is based on a specimen far larger than that of 

 the largest living man-eating shark, C. carcharias. Bemipristis 

 heteropleurus, of Agassiz, is regarded as identical with the 

 European Hemipristis serra. This identity was also indicated 

 by Dr. Jordan. Galeocerdo product us. Agassiz, is regarded as 

 identical with G. aduncus, Agassiz. Among the unidentified 

 teeth photographed in Jordan's paper. Leriche recognizes 

 Aprionodon, Galeus and Squatina. 



Leriche also notes that these observations show the great 

 geographical extension of the species of sharks, and the im- 

 portance that these have in the establishment of synchronisms 

 at great distances. It is, however, true that specific differences 

 of many kinds exist in species of shark, without showing them- 

 selves in the teeth. It is, however, safe to recognize no species 

 as now known by the teeth alone, unless the teeth show tangible 

 differences. 



In the same annals Leriche describes num. -inns sharks and 

 other fishes from the early Tertiary about Rheims. 



In the same annals Leriche describes the teeth of various 

 carboniferous fishes of the north of France and of Belgium. 



In Science, May 28, 1909, Mr. Barton A. Bean shows that the 

 name of the American eel should be AnguUla rostrata (Le 

 Sueur), this name being earlier than that of chrisypa given by 

 Rafinesque at about the same time. 



In the Bulletin of the American Museum of Natural History, 

 Volume 26, 1909, Dr. L. Hussakof describes a new species of 

 the extraordinary gmns of goblin sharks, of which the living 

 form is known as Mitsukurina, and the extinct species by the 



new species the name of Scapanorhynchus jordani. In this 

 species, the long blade of the snout is longer than in S. owstoni; 

 the eye is further forward, the gills are smaller, and there are 

 other differences of importance. Dr. Hussakof has no doubt 

 that Mitsukurina is identical with the Cretaceous Scapano- 



