220 THE CANADIAN ENTOMOLOGIST 



This species is described from a series of five, all taken in the Edmonton 

 district. 

 F.lleschus borealis, new species. 



The type will be deposited in the National Collection at Ottawa. It is 

 labeled 24-V-19; Edmonton, Alta.; collected by F. S. Carr. 



Length 2.8 mm. The colour is red, the eyes alone being black, and is covered 

 with white pubescence except for a denuded area behind the middle, stretching 

 from the second interval to the margin and back to the top of the declivity. 

 The beak is shining, shorter than the head and thorax, punctate, the pimctures 

 being coarse and well separated; the second joint of the antennae is longer than 

 the third, the median line on the thorax is raised in the middle only, the 

 pubescence diverging from it to the sides, which are rounded. It is widest at 

 the anterior third. The elytral strise are finely impressed and punctate with 

 coarse punctures closely placed. 



This species seems to be closely allied to hipunctatus Linn., but is dis- 

 tinguished by its colour. It has been described from a large series taken on 

 willow. 



Addendum. 



Mr. F. A. Sherrijff has kindly sent a specimen of Chlaenins purpiiricollis 

 Rand. This was received since the descriptions were prepared. It agrees 

 with the specimen loaned by Mr. Frost. This specimen was also taken in Mass. 



A BIBLIOGRAPHY OF THE LITERATURE ON THE DESCRIBED 



TRANSFORMATIONS AND FOOD PLANTS OF NORTH 



AMERICA SPECIES OF AGRILUS (COL.). 



BY C. A. FROST AND H. B. WEISS. 



New Brunswick, N. J. 



(Continued from page 210.) 



A. politus Say. 



Blatchley, Col. Ind. p. 801, 1910. 



Chittenden, Bui 22, n. s., U. S. D. A., Div. Ent., p. 68, 1900. 



Childs, Mo. Bui. Cal. Hort. Comm., Vol III, pp. 150-155, 1914. 



Felt, N. Y. St. Mus. Bui. 200, p. 37, 135, 1917. 



Frost, Can. Ent., Nov., p. 386, 1916. 



Hamilton, Tr. Am. Ent. Soc, Vol. XXII, p. 364, 1895. 



Hopkins, Bui. 32, W. Va. Agric. Exp. Sta., p. 184. 



Knull, Ent. News, Vol. XXXI, p. 10, 1920. 



Lugger, Psyche, Vol. IV, p. 203, 1884. 



Manee, Ent. News, Vol. XXIV, pp. 167-171, 1913. 



Smith, Ins. N. J., p. 295, 1909. 



This species is known as the oak twig-girdler. Spiral shaped burrows are 

 made in the soft-growing tissues of the twig, and encircle it from four to seven 

 times (Childs). Infests green bark on living willow trees (Hopkins). Common 

 on Salix obtusifolia (Hamilton). On willow (Manee) (Blanchard). On hazel 

 (Bruner). On Salix and Coryhis americana and C. rosirata leaves (Frost). On 

 oak and willow (Blatchley) (Smith). Breeds in living willow and striped 

 maple {Acer pennsylvanicum) (Knull). Forms galls on twigs of white thorn 

 {Cratcegus) (Felt). 



October, 1920 



