THE LEAF BEETLES. 1161 



spots ou eiich black, the outer ones sometimes eonflueiit to form a marginal 

 stripe. Upper surface punctured as iu intcrnipta. Leugtli 7-0.5 mm. (Fig. 

 505.) 



Throughout the State ; fre(iuent. April 1.5-SeptemT)er 18. Lives 

 on the foliage of eottonwood, Carolina poplar and other members 

 of the genus Populus. 



L. trcnnilfc Fabr., is an introduced European species which is 

 known to occur in JIassachu.setts and .Alichigan. 



2153 (0840). LiNA obsoleta Say, Journ. Phil. Acad. Nat. Sci., Ill, 1824, 

 45;!; ibid. II, 218. 

 Oblong-oval. Head, elytra and under surface purplish-black ; thorax 

 with reddish margins enclosing a rounded black spot, or reddish with three 

 or four blackish spots at center; elytra with the margins, tips and often 

 two short, indistinct lines on Imsal half, reddish-yellow. Elytra more 

 coarsely and densely punctured than in sciiiitu. Length 7-8 mm. 



Lake Cnunty ; rare. Tm'o specimens taken l)y Wolcott near Hess- 

 \dlle and Pine. May 2-June 30. 



XLI. Phyllodecta Kirby. lS:i7. (Clr., "leaf f to ))ite.") 



This genus is represented in the State by one o))long, convex: 

 species having the front coxal cavities open ; front tibia' slender, 

 neither toothed nor jirodueed at tip ; tarsi with third joint much 

 wider and longer than first and second and dee|)Iy bilobed; tarsal 

 claws toothed. 



21.54 ( ). PHYi.LomocTA VITELLINE Linn., Syst. Ent. Nat, ed. 10, 1758, 



370. 

 Oblong, conve.x. Purple, shining ; vmder surface plceous, bronzed. An- 

 tenuse slender, less than one-half the length of body; third joint longer than 

 second and one-half longer than fourth. Thorax (jne-third broader than 

 long, front angles prominent, hind ones rectangular, base without a mar- 

 ginal line; surface sparsely and irregularly punctured, the punctures on 

 sides coarser than those on disk. Elytra with rows of moderate sized punc- 

 tures, those on the sides coarser and more or less irregular. Length 4- 

 5 mm. 



Steuben County; rare. June 17. Taken by sweeping herbage 

 in tamarack swamp. Occurs on the willow, Salix longifolia. A 

 European species introduced by commerce. Of it Knab writes me: 

 "Generally passes in collections as P. vulgatissima L., but Weise 

 states that the latter species has the thorax finely margined behind. 

 I ha\-e sei'n no American specimens with this character." 



