114 . FIFTEENTH REPORT ON THE CABINET OF NAT. HISTORY. 



SUPPLEMENTARY NOTE TO THE THIRTEENTH REPORT 



OF THE REGENTS ON THE STATE CABINET. 



In tlie Thirteenth Annual Report of the Regents upon the State Cabinet, 

 I published a notice of the Trilobites of the Quebec group, occurring at 

 Georgia ( Vermont), proposing the generic names Bathynotus and Bar- 

 RANDIA for the two generic forms. At the moment of sending the manu- 

 script to press, I had changed the generic name Olenellus, at first 

 proposed, to Barrandia, in honor of the author of the ^^Systhne Silurien 

 de Boheme;''^ unfortunately overlooking the fact that Prof. M'CoY had 

 proposed the same name for a genus of trilobites. As the later name is 

 untenable, even if the genus proposed by M'CoY should be abandoned, 

 / I shall propose to return to the name Olenellus ; retaining the views 

 originally expressed as tt) the relations with Paradoxides and Olenus, 

 the primordial types to which the hew genus is allied. 



