WILLOW LEAF-BEETLES. 591 



them numerous spots and dots of dark green with a black line on the suture widened 

 anteriorly and a second line parallel with this on each side, the antennae and legs 

 rusty red. (Fitch.) 



78. Crej)idode,ra helxines (Linn). 



The adult Crepidodera helxines L. was found repeatedly througliout 

 May in central and southeastern Illinois, devouring the leaves of wil- 

 lows, and scarcely less commonly upon the Lombardy poplar and the 

 balm of Gilead, doing decided injury to young trees in the nurseries. 

 (Forbes's Rep. Ins. 111., 1883.) 



This is also said by Mr. W. L. Devereaux to be very abundant on the 

 leaves at Clyde, N. Y. 



79. Phyllodecta vitellinw (Linn). 



The beetle. — Second and third joints of the antennae of usual length. Body oblong, 

 a little inclining to ovate, glossy ; underneath black-bronzed, scarcely punctured ; 

 above bronzed with a copper tint, minutely punctured. First and second joints of 

 the antennae rufous ; scutellura impunctured ; elytra punctured in rows, with the inter- 

 stices indistinctly punctured ; tarsi piceous with the first joint rufous. 



80. Galerucella sagittarice Gyll. 



The beetle. — Body brown, a little downy, not glossy. Mouth dirty yellow ; pro- 

 thorax transverse, impressed, reddish-yellow, with three black nearly confluent spots; 

 scutellum subquadrangular, truncated at the apex ; elytra grossly but not thickly 

 punctured ; suture and lateral margin paler than the rest of the elytron ; anus and 

 legs reddish yellow ; tarsi darker. Variety B : With the base of the antennae yellow- 

 ish underneath, the black spots on the prothorax distinct, and the elytra entirely of 

 a brownish yellow. 



81. Lina ( Plagiodera) lapponica (Linn.). 



Larvae of Plagiodera lapponica L., taken on the willow at Normal, 

 June 24, commenced to pupate July 1, and to emerge on the 3d, the 

 last of about sixty appearing on the 8th. (Forbes's Rep. Ins. 111.. 1883.) 



82. Lina (Plagiodera) acripta Fabr. 



Mr. D. W. Coquillett writes me that he has observed this beetle on 

 the willow in Illinois. 



83. The snowy tree-cricket. 



(Ecanthus niveus Serville. 



This common tree-cricket has been quite frequent, congregating in 

 raspberry and blackberr}^ patches, as well as on white willow hedges, 

 where it often causes much injury by filling the stems and twigs of these 

 plants with its eggs. Several species of Helianthus and one Solidago 

 are, however, its chief food-plants in Nebraska. Scarcely a single one of 

 these weeds escapes without the eggs of one or more of the crickets 

 being thrust into its pithy substance. (L. Bruner in Riley's Rep. luj. 

 Ins., U. S. Ag. Dpt., 1884, p. 399.) 



