Vol. XXVli] ENTOMOLOGICAL NEWS. 361 



Measurements of different forms of corni are here given 

 for comparison with the descriptions of the American species 

 also herewith included. 



Fall Migrant. 



Segments of antenna: III, 0.464 to 0.512 mm.; IV, 0.16 to 0.176 mm.; 



V, 0.16 to 0.176 mm.; VI (0.144 to 0.176 mm. + 0.064 mm.) 

 Spring Aptera from Roots. 



Segments of antenna: III, 0.32 mm.; IV, 0.128 mm.; V, 0.128 mm.; 



VI (0.128 + 0.048 mm.). 

 Fall Apterous from Roots. 



Segments of antenna: III, 0.32 to 0.352 mm.; IV, 0.128 mm.; V, 0.128 



mm.; VI (0.128 + 0.064 mm.). 

 Spring A late from Roots. 



Segments of antennae: III, 0.32 mm.; IV, 0.128 mm.; V, 0.128 mm.; 

 VI (0.128 + 0.048 mm.). 



Since the American form proves to be distinct from corni, 

 the correct name to apply to the species must be ascertained. 



Two species were described by Walsh (1862). These two, 

 comic ola and fungicola, are undoubtedly the same species as 

 that common upon Cornus. 



Fitch (1858) described Eriosoma querci from oak in Illinois, 

 the description of which agrees fairly well with our Anoecia 

 upon Cornus. His notes upon the species give the following 

 collection numbers 7946-9 and 7950-1. Of these numbers 

 7948 was mounted from the Fitch collection by Mr. Theo. 

 Pergande and deposited in the National Museum collection. 

 The writer, in studying the Fitch collection, located also the 

 numbers 7949, 7950 and 7951. These specimens were pinned 

 and carried Fitch's labels. On mounting in balsam, all of the 

 four specimens proved to agree with the species so common 

 upon Cornus. Anoecia querci (Fitch), therefore, must be the 

 name to apply to this species. 



Cowen (1895) referred to querci Fitch a species found by 

 him upon oak in Colorado. Later Davis (1911) gave a more 

 complete description and figures of this same species and 

 placed it in Phyllaphis. Davidson (1910) also recorded the 

 insect from California. Gillette (1914) renamed Cowen's 

 species quercifoliae and separated it from the eastern one. 

 Specimens collected by the writer in Virginia prove that the 

 insect referred to by Davis if not by Davidson is a very dis- 



