182 THIRTIETH EEPOBT ON THE STATE MUSEUM. [70] 



quent argument which it furnishes against the adoption of 

 proposed genera, resting on microscopic detection of some 

 slight variation in form or proportion. 



In the belief that the insect was new to science, it was 

 described by me as Eudamus Orestes, for publication in the 

 28th N. Y. St. Mus. Report, then passing through the press ; 

 but in the 'necessitated printing of the Report at an earlier 

 day than was anticipated, the description could not (together 

 with other papers in readiness) be given place. Hence, the 

 erroneous reference made to Orestes on page 58 of Edwards' 

 Catalogue of the Diurnal Lepidoptera of North America. 



Subsequently, Mr. W. H. Edwards identified the species 

 with a figure of Butler in his Lepidoptera Exotica. As the 

 figure is accompanied by only a brief diagnosis, and but a 

 few copies of the work are to be found in this country, it is 

 thought that the above description may be of service. 



