346 THE CANADIAN ENTOMOLOGIST. 



irregular postocular furrow ; the posterior orbits flat and polished ; the 

 thorax polished throughout ; the metatarsus about as long as all the 

 other segments together ; the claws cleft, the inner ray much shorter 

 than the outer ; the wings more or less infuscated, with a transverse 

 fascia below the stigma j front wings with the base of the radial secton 

 atrophied and the radio-medial cross-vein hyaline ; the saw-guides long, 

 straight, and slightly slanting above, straight on the basal half below, 

 gradually convexly narrowing and bluntly rounding to the apex, the 

 upper apical angle rounded, the apex and lower margin densly fringed 

 with setae as long as the width of the saw-guides. Length, 5 mm. 



Described from a number of females received from Mr. Robert 

 Matheson, of Brookings, S. D., after whom the species is named, who 

 bred the adults from larvae received from New Glasgow, Nova Scotia. 

 The larva; are leaf-miners on birch. 



This species appears to be very close to the European nemorata, 

 Fall., and may prove later to be the same species. It agrees very 

 well with Cameron's imperfect description of that species. My specimens 

 all have the abdominal segments margined at sides with yellow or 

 white, while Herr Snellen van Vollenhoven figures nemorata with 

 rounded spots. He also figures the seventh segment of the antennae as 

 shorter that either the sixth or eighth, while the Nova Scotian specimens 

 have all three segments subequal. 



Endelomyia, Ashm. 

 This genus was erected for Moiiostegia rosa, Harr. The characters 

 used by Ashmead for differentiating this genus are common to Caliroa, 

 and therefore useless for this purpose. The genus is a good one, and 

 can be separated from Phyllotoma and Phlebatrophia by having the 

 antennae nine-segmented, and from Caiiroa, as generally considered, 

 by having the clypeus truncate and the second segment of the 

 antennae only about half as long as the first and about as broad as long. 

 In Caiiroa, the first and the second segments of the antennae are 

 subequal in length and the second segment is therefore much longer 

 than broad, the clypeus is always more or less emarginate. 



. The single species of Endelomyia occurring in this country is 

 identical with the European species infesting the rose, and Harris's 

 name of rosa; will have to give away to the Fabrician name of athiops. 



