130 



University of California Publications. 



[Geology 



From Moore's Canon, in the Santa Monica Range, Dr. Bowers 

 obtained numerous other fragments, none of them well preserved. 



Of the known families, the genus Rogenio approaches nearest 

 to the Cobitopsidce. The generic name recalls the obsolete name, 

 Rogenia, once applied by Valenciennes to the whitebait or very 

 young herring. 



37. Rogenio bowersi Jordan, new species. 



Another specimen, about three and one-half inches long, seems 

 referable to Rogenio, but must belong to another species. It 

 shows a head in bad condition, a long vertebral column, the dorsal 

 opposite the anal as in Rogenio solitudinis, but very much farther 



Tig. 24. Rogenio bowersi Jordan. Miocene of Brown's Canon. Type spec- 

 imen. 



back. The head is contained three and one-half times in the space 

 from nape to front of dorsal, while in R. solitudinis it goes but 

 one and one-fourth times in the same distance. Fifty-two ver- 

 tebras may be counted in this specimen, not very accurately. 

 About thirty-six are before the dorsal, nine beneath it, and seven 

 behind. The end of the column is not preserved, so that we may 

 estimate the total as 36 -f 9 -f- 15 = about 60. The body is very 

 slender, almost eel-like, the depth ten times in length, the head 

 about six. The jaws appear to be long, and the form suggests the 

 genus Stotnias. The dorsal and anal rays are slender, each about 

 ten in number. This specimen is from Soledad Pass, and it may 

 be named Rogenio bowersi, for its discoverer, Rev. Stephen W. 

 Bowers, well known as a student of the palaeontology of Cali- 

 fornia. 



