328 THE CANADIAN ENTOMOLOGIST. 



not reaching either margin. Between these lines the ochreous sliade does 

 not reach the costa, and is incised opposite the outer third of inner 

 margin. Wing sparsely irrorate with black, distinctly along costa and in 

 the ochreous shade. A group of dark scales on centre of outer margin. 

 Hind wing blackish, pale along costal edge and extreme base. Expanse 

 17 mm. Male genitalia with uncus simple, gently curved, broadening 

 toward base ; harpes broadly rounded, spoon-shaped, strongly contracted 

 at base, tips evenly rounded. 



Three specimens; San Diego, Texas; May 24 to 26 (E. A. Schwarz); 

 U. S. Nat. Mus., type No. 5348. 



Genus Felderia, Walsingham. 

 Felderia dorsitnacula, n. sp. 



Palpi strongly recurved to base of thorax, pale gray before, black 

 outwardly ; head and thorax dark gray. Fore wing gray, dark on the 

 costal half, more cinereous along internal margin, mottled with dark 

 brown. A triangular black patch with point on centre of inner margin 

 and the broadest side on the median vein, joined outwardly to a triangular 

 discal patch, that is extended in a curved band nearly to apex, where it 

 becomes obsolete. Hind wings rather light gray, a little darker toward 

 the margin. Expanse 24 to 26 mm. Male genitalia with uncus single, a 

 broad triangular plate, tapering rapidly to a point ; harpes slender, rather 

 flat, long, well curved at base, the tips oblique above. 



Nine specimens ; Huachuca Mts., Arizona ; July 24 to Aug. 15 (Dr. 

 W. Barnes); U. S. Nat. Mus., type No. 5346. 



THE ACADEMY OF SCIENCE OF ST. LOUIS. 



At the first meeting of the autumn, held on the evening of October 

 15, sixteen persons present, Mr. Wm. H. Roever, of Washington Univer- 

 sity, presented an elaborate paper discussing in detail the subject of the 

 establishment of the method of least squares. Professor F. E. Nipher 

 presented two papers, entitled respectively Positive Photography, with 

 special reference to eclipse work, and The Frictional Effects of Railway 

 Trains upon the Air; and Mr. C. F. Baker exhibited an interesting collection 

 representing nearly all of the species df fleas thus far known, which he had 

 prepared for the United States National Museum. 



Four persons were elected to active membership. 



William Trelease, Recording Secretary. 



