330 JOURNAL OP ECONOMIC ENTOMOLOGY [Vol. 1 



Collections from human excreta. The following species of Calypterje were 

 collected by the writer from human excreta during the months of July and 

 August, 1907, and may properly be added to the list of such flies given by 

 Dr. Howard in his paper concerning the Fauna of Human Excrement. The 

 determinations are by Mr. Coquillett through the kindness of Dr. Howard: 



Lucilia sericata, very numerous, collected in large numbers. 



Lucilia sylvarum, found but sparingly. 



Phormia regina, rather abundant. 



Anthomyia radicum, swarming in great numbers. 



My endeavors to rear any of these species from excrement have met with 

 failure so far. In the rearings made during the past summer large numbers 

 of a hymenopterous parasite were reared from the pupae under observation. 

 Mr. H. L. Viereck has identified the same as Aphacreta muscae (Ashm). It 

 issued in one instance from an unidentified species of Sarcophaga. 



W. R. Waltox. 



Snow-white linden moth, Ennomos suhsignarius Hubn. This pest was re- 

 sponsible for serious injuries to beech in the Catskills last year. Extensive 

 defoliation occurred in both the Catskills and the Adirondacks this year. The 

 moths have been exceptionally abundant over wide areas, having been numer- 

 ous at New York, Kingston, Hudson and Utica, and also have attracted atten- 

 tion in Albany and Troy. The insect does not appear to have been especially 

 destructive in the last two named localities. It may be recalled that this spe- 

 cies was well known as a shade tree pest about 1870, and has been remarkable 

 chiefly in later years because of its scarcity. This unusual outbreak is cer- 

 tainly worthy of more than passing notice. The English sparrow, as is well 

 known, feeds readily upon the moths and undoubtetUy is an important factor 

 in preventing extensive injuries to shade trees. 



E. P. Felt. 



Aphid on Gladioli Bulbs. A unique injury by a plant louse, referable to 

 the genus Aphis, was brought to attention last spring. The aphids breed in 

 large numbers on the base of the bulbs around the origin of the roots, be- 

 ginning in early spring as soon as the temperature of the storage warehouse 

 warms up and continuing to reproduce till toward the end of July. The insect 

 is so abundant on certain varieties as to almost fill with exuviae many of the 

 interstices in small boxes containing a dozen or so bulbs. Exuvipe and dead 

 plant lice can be swept up in large numbers in a badly infested warehouse. 

 Bulbs affected by this insect are sickly, weakened nnd may fail to flower. 



E. P. Felt. 



