46 NEW YORK STATE MUSEUM 



Melampsora americana Arthur^ 

 Newcomb, Essex county, on leaves of Salix nigra Marsh. 

 H. D. House, August lo, 1921. 



Melampsoropsis abietina (A. & S.) Arthur^ 

 Newcomb, Tahawas, Calamity pond, Adirondack lodge, and other 

 localities in Essex county, apparently common, on the under sur- 

 face of leaves of Ledum g r o e n 1 a n d i c u m Oeder. H. D. 

 House, June 26-30, 1923. The aecial stage is P e r i d e r m i u m 

 a b i e t i n u m (A. & S.) Thium. on leaves of Picea rubens, 

 as demonstrated by Eraser in America, and by Klebahn in Europe 

 for other species of Picea. 



Melampsoropsis Cassandrae (Peck & Clinton) Arthur^ 

 On leaves of C h a m a e d a p h n e c a 1 y c u 1 a t a (L.) Moench, 

 in bog at base of Moxon mountain, near North Creek, Warren 

 county. H. D. House, June 26, 1923. Also on the same host at 

 Newcomb, Calamity pond, and other localities in Essex county, 

 always in association with Picea mariana (Mill.) B. S. P., 

 upon which the aecial stage, Pe rider mi um consimile 

 A. & K. occurs. There is also in the herbarium a specimen of the 

 aecial stage from Junius swamp, Seneca county, collected by E. J. 

 Diiraud, July 1905. 



Empusa americana Thaxter 

 Orient, Long Island, on blow flies (CaUiphora vomit oria). Roy 

 Latham, August 20, 1920 and October 15, 1919. 



Melampsoropsis Chiogenes (Dietel) Arthur 

 On the under sides of leaves of Chiogenes h i s p i d u 1 a 

 (L.) A. Gray, Newcomb, Essex county, H. D. House, July 18, 1922 

 and July 2, 1923. Apparently not rare, but easily overlooked, as it 

 was also found at Tahawas, Calamity pond, Indian pass and Chapel 

 pond, all in Essex county, and near Long lake in Hamilton county. 

 The aecial stage is wot definitely known, but is probably some un- 

 recognized Peridermium upon the leaves or cones of spruce, although 

 balsam fir occurs in the same localities. 



Melampsoropsis ledicola (Peck) Arthur^ 

 On the upper surface of leaves of Ledum groenlandi- 

 c u m Oeder, bog at base of Moxon mountain near North Creek, 



