THE LEAF BEETLES. 1175 



2174 (10.379). PHYLLOBROTICA VITTATA Horn. Trans. Amer. Entom. Soc., 



XX, 1893, 100. 



Elongate-oblong. Head black, front yellow ; thorax, legs and under 

 surface yellow ; elytra piceous, the side margin and suture yellow and a 

 median yellow stripe extending partly or wholly from unibone to apex ; an- 

 tennre dusky, the basal joints yellow. Thorax one-half wider than long, 

 sides nearly straight; disk smooth, with a shallow transverse depression on 

 basal half. Elytra sparsely and finely punctate. Fifth ventral segment of 

 male with a deep, cup-shaped cavity as in Hnibata. Length 4-5 mm. 



Spencer County; rare. May 24. Taken by sweeping herbage 

 along roadsides. 



2175 (6848). PHYLLOBROTICA DISCOIDEA Fab., Syst. Eleut., I, 1801, 485. 

 Elongate, parallel. Head, thorax, legs and under surface, except the 



abdomen, yellow ; elytra piceous or bluish-black, with a sutural line, wider 

 at base, and narrow side margins, yellow; antennae piceous. the three basal 

 joints indistinctly paler ; tips of tibiae and tarsi piceous. Thorax wider 

 than long, slightly wider at apex; disk smooth, with a rather deep fovea 

 each side of middle. Elytra sparsely and rather finely punctate. Length 

 4-6.5 inm. 



Western half of State; scarce. May 27-July 25. Occurs on the 

 arrow alum (Pclkandra undulata Raf.) and other plants about the 

 margins of marshes. 



2176 (10.378). PHYLLOBEOTICA LIMBATA Fab., Syst. Eleut., I, 1801, 486. 

 Resembles discoidea very closely in form and color. The basal joints 



of antenna? are more distinctly paler and the body beneath is wholly dull 

 yellow. Thorax with a broad but shallow transverse depression on basal 

 half. Elytra more finely, sparsely and indistinctly punctate; abdomen very 

 sparsely pubescent. Length 4-6 mm. 



Northern half of State, scarce ; Knox County only in the south. 

 June 25-August 9. In similar localities with the preceding. The 

 males are easily separated from those of discoidea by the deep pit of 

 hist ventral segment. 



2177 ( ). PHYLLOBROTICA LENGI sp. nov. 



Form of discoidea. Color of head, thorax and under surface as there ; 

 color of elytra given in key; legs yellow, tarsi fuscous. Thorax as wide as 

 long, slightly wider at apex; disk smooth, with a median and two lateral 

 sub-basal impressions. Elytra finely alutaceous, sparsely and finely punc- 

 tate. Length 5.5-6 mm. 



Perry County; rare. May 16. Swept from roadside herbage. 

 The last ventral of male is like that of linilxt/o, convex in front, with 

 deep, cup-shaped cavity behind, this prolonged at middle by a short 

 truncate lobe limited each side by a notch. The dark, strongly pu- 

 bescent abdomen and different color of elytra readily distinguish it 

 from limbata, while the former character and yellow head separate 



