18e9.] 83 [Miaot. 



Section of Entomology. May 26, 1869. 



Mr. P. S. Sprague in the chair. Eight members present. 



The following papers were presented: — 



AMERICAN LEPIDOPTERA. I. Geometric Latr. 



By C. S. Minot. 



Fidonia bicoloraria nov. sp. Al. ex., 1. 10 inch. White spotted 

 and marked with brown. Tibiae white. Margin of primaries brown, 

 except at the terminations of the nervures of secondaries white. 

 Above ; primaries with brown spots most numerous at the base and 

 along the costal border, and two broad, maculated bands extending 

 from the anterior to the inner edge; the first, subapical, tapers 

 slightly towards the inner margin; the second is marginal, and of 

 uniform width. Secondaries with a few spots chiefly on inner and 

 outer portions. Both wings have a dot at the outer termination of 

 the cell. Beneath markings above very faintly repeated except the 

 cellular dots, which are as distinct as above. Massachusetts, July? 

 Coll. Min. 



Fidonia Faxonii nov. sp. Al. ex., 1.5 to 1.12 inch. Ferru- 

 ginous densely spotted with brown. Above primaries darker than 

 secondaries, with three transverse, erose, brown bands, narrow, and 

 most distinctly defined towards the base of the wing, while towards 

 the exterior border they have a tendency to disappear into the 

 ground color. Between the second of the bands and the third, and 

 between the third and outer edge, are sparsely scattered in blotches, a 

 few white scales. The first band extends from near the middle of 

 costal margin almost, if not quite, to the interior ; the third from near 

 the apex to the inner border, and owing to the white scales it is more 

 distinctly defined exteriorly than the other two. The second from 

 half way between the first and the third on the costal margin to any 

 point between their interior terminations, being extremely variable 

 in its direction, though always starting from the same point on the 

 costa. Secondaries fulvous, with three bands, like primaries. The 

 first on the basal third passing through the centre of the discal 

 cell, has an outward curve following the direction of the exterior 

 margin. The second extends from the middle of the anterior border 



