130 THE CANADIAN ENTOMOLOGIST. 



legs are darker coloured than Osten Sacken describes them. This species 

 has been recorded from California and Colorado. 



13. Syrphus mentalis, Will. 



Two specimens : Cook's Inlet, Alaska ; coll. L. L. Dyche. This 

 species is known from the State of Washington. These specimens show a 

 considerable variation from the description and from each other. How- 

 ever, the points in which one specimen differs from the description are the 

 very points in which tlie other specimen agrees. I am thus led to believe 

 that the species is variable. 



14. Syrphus protritus, O. S. 



One specimen : Cook's Inlet, Alaska ; coll. L. L. Dyche. This 

 species was described from California. 



15. Syrphus Lesueurii, Macq. 



Two specimens : Cook's Inlet, Alaska ; coll. L. L. Dyche. This 

 species has been recorded from New England and once from the Pacific 

 Coast. 



16. Syrphus umbellatariim, O. S. 



Two specimens : Cook's Inlet, Alaska ; coll. L. L. Dyche.. This 

 species has been recorded from New Hampshire to Arizona, but never 

 from the North-west. This record gives the species an immensely in- 

 creased range. 



17. Baccha clavata, Fabr. 



One female specimen taken on flowers of Aster multiflorus, Sept. 

 28th, 1896. It differs from the description in having two small yellow 

 spots on the first abdominal segment corresponding to those on segments 

 two and three and in lacking the white pile on all except the first. It is 

 without doubt, however, this species. This is the second occurrence of 

 this species at Lincoln, Nebraska. It was previously taken in 1895 

 under similar circumstances. 



Xanthogramma, Schiner. 

 The astute Prof. J. Mik (Wien. Ent. Zeit., 1897, p. 65,) has discovered 

 a character that will separate this genus from Syrphus as far as the 

 European species of these genera are concerned. He states : " Als ein 

 bezeichendes Merkmal fiir die Gattung Xanthogramma habe Ich Form und 

 Farbe der Umvvallung (das sind die Klappen) des Metathoracicalstigma 

 (ueber den Hinterhuften) gefunden. Diese Umwallung ist bei alien 

 Arten nicht sehr hoch ; sie ist schwarz und tragt auf dem freien Rande 

 kurze, feine, schvvarze #der braune Wimperharchen." 



