I 913 ] Jorclan-Beal: Supplementary Notes on Fossil Sharks 247 



Family GALEORHINIDAE 

 Family GALEOCERDO Muller and Heule 



4. Galeocerdo procluctus Agassiz. 



Leriehe identifies this with Galeocerdo aduncus Agassiz of the 

 Swiss Eocene. The four figures given by Jordan ("Fossil Fishes 

 of California") in figure 13, page 114, represent this species. 

 The smaller ones in figure 4 on page 102 referred doubtfully to 

 Galeocerdo represent something else. Leriehe suggests possibly 

 a species of Aprionodon. Perhaps they are side teeth of Odon- 

 taspis; e, as well as a, in figure 4, belongs to Galeorhinus. 



Genus Galeorhinus Blainville 

 (Galeus Cuvier 1817, not of Rafinesque 1810) 



5. Galeorhinus hannibali Jordan and Beal, new species. 



Miocene of Barker's Ranch; Pliocene of Temescal Canon. 



The species indicated by Jordan (1907) under the name of 

 "Galeus (zijopterus Jordan and Gilbert?)" can hardly be 

 identical with the existing shark thus named. 



The tooth from the Pliocene of Temescal Canon, Santa 

 Monica Mountains, is described as similar to the teeth of 

 Galeorhinus zyopterus, but more nearly erect and less notched 

 on the outer margin than are most of the teeth of that species. 

 The tooth is small, narrowly triangular, turned moderately out- 

 ward, the base with five small cusps on the inner margin, the 

 cusp nearly entire. Tooth e, figure 4 (figs, a, a', of the present 

 paper), from the Miocene of Kern County, must, as indicated by 

 Leriehe, belong to this form. This tooth may be taken as type 

 of the species. 



The species is named for Mr. Harold Hannibal of Stanford 

 University. 



Under the ruling of the International Commission of 

 Zoological Nomenclature, the name Galeus cannot be used for- 

 tius genus, which becomes Galeorhinus. 



