THE CANADIAN ENTOMOLOGIST. 255 



tubercles elevated on the inner side, forehead flat, moderately wide. 

 Wings long and slender, wit h caljitij ,^, tvvice forked. Nectaries one-fourth 

 the length of the body and ve?y robust, being enlarged at the middle and 

 base. Cauda one-fourth the length of the nectaries, oblong and globular 

 at the tip ; base broad, tapering to a constriction at the connection with 

 the base. Anal plate broad and slightly emarginated. 



Drepanaphis. Del Guercio, 1909 * 

 type, D. acerifolice Thomas. 



Syn.: PhymatosipJmm Davis, ^ 1909. 



Characters : Antennae at least twice as long as the body and situated 

 on distinct antennal tubercles ; spur of sixth segment eight times as long 

 as the segment ; third segment shorter than spur of sixth. Antennae very 

 slender and tapering. Forehead convex, body robust, and bearing 

 finger-like projections on the dorsal portion of the abdomen. Nectaries 

 about one-fifth the length of the body, swollen at the base and tapering 

 outwardly. Cauda one-half the length of the nectaries and globular at the 

 tip^ base broad and tapering towards the constriction between the base and 

 the tip. Anal plate seemingly divided longitudinally and slightly emar- 

 ginated in the middle. 



Calaphis Walsh, i863.t 

 type, C. betuklla Walsh, 



Characters : Antennse much longer than the body, wiih segments 

 3, 4 and 5 more or less hairy, and sixth about one half the length of the 

 spur. Antennal tubercles large and broad, wiih bases almost together, 

 giving the forehead a narrow appearance and forming with it a U. Thorax 

 long and slender, nectaries spindle-shaped and short, being equal in length 

 to the Cauda. Cauda, thick, short and globular at the tip ; base broad 

 and about two-thirds as wide as long. Anal plates slightly emarginated, 

 lobes rounded. Sides of abdomen with prominent tubercles, each one 

 bearing a single hair. Wings long and slender, veins thick and dark, 

 defiexed when at rest. 



Eucer aphis Walker, 1870. J 

 type, A. betuhz Linnteus. 

 Characters : Antennae about one and one-half limes as long as the 

 body, and placed on large tubercles ; spur of sixth segment slender and 



•Rivista di Patologia Vegetale, Vol. p. 2. 



I. Annals of the Entomological Society of America, \o\. 2, p. 196. 

 tProceedings of the Entomological Society of Philadelphia, Vol. i, p. 301. 

 :;:The Zoologist, p. 2001, 1870, London. 



