46 
Psyche 
[April 
pennis, with longer costal setulse. All three occur in Europe, 
the last two are here recorded also from America, where stigma- 
ticalis has been previously known under the name of Platycnema 
imperfecta Loew. The two American species are separable on 
the following characters : 
First section of the costa with evident setulse, second section 
with more than ten setulse; hind femora pectinate above 
with long bristles, hind metatarsi setose above; bristles 
black; 2-2.25 mm. pectipennis Meigen. 
First section of the costa with very weak setulse, second section 
with less than ten setulse; hind femora short-pectinate, 
hind metatarsi not setose above; bristles at least of the 
lower occiput and of the front coxse whitish; 1-2 mm. 
stigmaticalis Zetterstedt. 
I have specimens of pectipennis from the Pacific slope, its 
range indicating a continuous distribution through to northern 
Europe. The following localities are represented: Yellowstone 
Park, Wyoming; Bovill, Coeur d’Alene, Collins, and Potlatch, 
Idaho; Olga, Pullman, Spokane, Tacoma and Woodland, Wash- 
ington; Douglas, Alaska; and Eureka, California. 
M. stigmaticalis, as P. imperfecta, was described from the 
District of Columbia. There are no further records of its occur- 
ence in America. I have specimens from the following widely 
separated localities, which have been compared with Dr. Loew’s 
type of imperfecta, now located in the Agassiz Museum of Harvard 
University, and with European specimens of stigmaticalis. 
Boston, Massachusetts; Cold Spring Harbor and Ithaca, New 
York; Philadelphia, Pennsylvania; Washington, D. C.; St. 
Augustine, Florida; Paris, Texas; Chicago, Illinois; Brookings, 
South Dakota; Lawrence, Kansas; Thompson, Montana; 
Coeur d’Alene and Potlatch, Idaho; Colfax, Friday Harbor, 
Index, Mount Rainier, Pullman and Quilcene, Washington; 
Nelson, British Columbia; and Panama. 
Males of both species have been taken in a light trap at 
night. Most of the females were caught on windows in houses, 
a habit originally noted by Zetterstedt. On several occasions 
