On the Birds of Ritchie County. 129 



mentation. The genus is characterized by a large hollow expansion on 

 the fore wings opening outwardly at basal third. This extraordinary 

 feature is not shared by the Brazilian Amblyura cornsca Led., apparently 

 its nearest ally. The basal and terminal fields of the primaries are rich 

 purply brown, separated by paler median lines as in corusca. The me- 

 dian space is paler. The abdomen is tufted at the anus. The hind wings 

 are dark, with paler indications of transverse lines on internal margin. 

 The specimen is from New York. 



I have searched the few papers left by Mr. C. T. Robinson 

 which have come into my possession, without finding a de- 

 tailed description of this species. Mr. Robinson's MSS. 

 which I have yet seen consist almost entirely of enlarged 

 drawings of the venation of small species of moths with brief 

 notes. In 1870 Mr. Robinson exhibited to me prepared 

 specimens and a drawing of the abdominal appendage of the 

 male Leucarctia acrcea, recently described by Mr. H. K. 

 Morrison, in the pages of "Psyche." It had been acci- 

 dentally observed by him during its voluntary extrusion. 

 He had prepared a paper on the subject which I yet hope 

 to discover. 



XV. — Some Observations on the Birds of Ritchie County, 

 West Virginia. 



By WILLIAM BREWSTER. 

 Read March 22, 1875. 



In preparing the following paper, I have adopted the 

 systematic arrangement of a faunal list, more for the sake 

 of convenience than with any idea that it is deserving to 

 take rank as such, for the time spent in the locality was by 

 far too brief, for the acquirement of a very perfect knowl- 

 edge of its avian inhabitants. However, the results, em- 



