232 
Psyche 
[Oc tober- Dece mbei 
and venter greenish or yellowish ; membrane smoky, the smaller 
areole and a small rounded spot next to the cuneus hyaline, the 
veins calloused, greenish, becoming white at the apex of the 
larger cell. Legs yellowish; tibiae piceous at the extreme apex, 
the fore and middle tibiae often greenish on the apical half; 
third segment of tarsi, often also the base of the first segment, 
piceous. Body rather sparsely clothed with white hairs, most 
conspicuous on the lateral margins of pronotum and hemelytra; 
dorsal parts (including head) also with conspicuous short black 
hairs which are flattened and deciduous. 
Orthotylus ( Psallus ) delicatus Cook, 1891, Bull. 76, Mich’ 
Agr. Coll. Exper. Sta., p. 10, fig. 1 (manuscript name of Uhler)’ 
This species is readily distinguished from the other American 
representatives of the genus Orthotylus by the character of the 
vestiture and the genital claspers. 
Reclescribed from numerous specimens collected at Ann 
Arbor, Mich., June to September, 1920, 1921, 1922. I have 
also seen individuals from Stockbridge, Mich., l-IX-1920 (R. F. 
Hussey); Battle Creek, Mich., 18-VI-1922 (Priscilla Butler); 
and four from East Lansing, Mich., bearing the label “Ag. Coll. 
Mich.” Lectotype, $ , “Ag. Coll. Mich. 7-29-’90. 1642.”, in 
collection of the Michigan Agricultural College. 
II. 
In my recent paper on Hemiptera from North Dakota 5 , 
there are two errors which require correction. 
p. 9, line 27. In place of Ischnodemus falicus (Say), read 
Ischnodemus hesperius Parshley (1922, Bull. Brookl. Ent Soc., 
xvii, p. 123, — I. brevicornis Parshley, 1922, S. Dak. State College 
Techn. Bull. No. 2, p. 8; name preoccupied). 
p. 10, line 28. In place of Peritrechus fraternus Uhler, read 
Peritrechus sashatchewanensis Barber (1918, Jl. N. Y. Ent. Soc., 
xxvi, p. 60). 
5 Occas. Papers Mus. Zool. Univ. Mich., No. 115, July 1, 1922. 
