20 PSYCHE [Fehruary 



thirds of the marginal, and the anterior and apical two-thirds of the submarginal 

 cells, from the latter it extends broadly on each side of the apical cross vein, fourth 

 longitudinal and posterior cross vein slightly beyond the fifth longitudinal vein, it 

 also extends inward along the fourth longitudinal and anterior cross vein, leaving 

 only the central portion of the first posterior and the basal posterior half of the 

 discal cell hyaline. Calypteres whitish margined with yellow. Length, 1 2 mm. 



One specimen, Montreal Island, Canada, from Mr. G. Chagnon. Its large 

 size and broad, maculated wings readily distinguish this species. 



Identification of Specimens. — The Cambridge Entomological Club is pre- 

 pared to undertake the identification of adult forms in all orders, free of charge, 

 for paid-up subscribers to Psyche. The privilege of retaining specimens after 

 identification, for insertion in the collection of the Boston Society of Natural His- 

 tory, is reserved. Each specimen submitted should therefore have a label bearing 

 a number or other distinguishing mark, and the sender should keep a memorandum 

 of these labels. 



A Department of Bibliography will be instituted in the next number of 

 Psyche. Brief references to current entomological literature will be presented. 

 This department will hereafter be a regular feature of the journal. 



