THE LEAF I3KETLKS. 



11*1 



r/. Three stripes on each elytron, statural, median and submar- 

 ginal. 



h. Form oblong-oval; front angles of thorax not dentiform; 

 body beneath and legs pale. 21S4. fimbriata. 



hh. Form oval; front angles of thorax dentiform; elytra! dark 

 stripes broad. petaukista. 

 gg. Two stripes on each elytron, sutural and median; oval or ob- 

 long-oval; fourth joint of antennae distinctly longer than 

 third. 2185. mi n lata. 



aa. Antennae slender, as long as or longer than half the body; speeies 

 smaller (usually less than 4.5 mm.), much depressed; front vertical; 

 elytral margins usually flattened. 

 L Elytra with narrowly flattened margins ; yellow with an oval discal 

 black space ; head yellow ; umbone indistinct. 



2186. THYAMOIDES. 



//. Elytral margins broadly flattened, the epipleune wide and horizontal.. 

 j. Elytra broadly oval, sides much curved, coarsely punctate; dirty 

 yellow with indistinct black lines. 2187. limbalis. 



jj. Elytra with sides feebly curved or nearly parallel, entirely piceous 

 or yellow with piceous spots. 

 k. Thorax very coarsely punctured ; elytra with a more or less evi- 

 dent costa from the humeri to apex. 2188. sexmaculata. 

 kk. Thorax finely and sparsely punctured or smooth ; elytra without 

 costa on the side. 



I. Head coarsely and closely punctate ; elytra with base, suture 



and often two spots on each, brown. suturalis. 



II. Plead sparsely punctate or almost smooth. 



m. Smaller, not over 4 mm. ; elytra usually in great part pic- 

 eous ; umbone prominent. 2189. quercata. 

 mm. Larger, 4.5-5 mm. ; elytra dull yellow ornamented with black 

 spots tending to form transverse bands. 



2190. SCALARIS. 



*2180 (6928). (Edionychis gibbitarsa Say. Journ. Phil. Acad. Nat. Sci., 

 IV, 1824, S3; ibid. II. 225. 

 Oval, slightly oblong, moderately convex. Head, under surface and 

 femora yellow or reddish-yellow ; thorax yellow with four piceous spots, the 

 two median ones often more or less confluent; elytra brilliant green or co- 

 balt-blue ; tibia?, tarsi and antennae piceous ; scutellum black. Thorax more 

 than twice as wide as long, margins moderately flattened, not translucent. 

 Elytra sparsely and indistinctly punctulate. Length 5-7 mm. 



Throughout the State: frequent, February 21-September 29. 

 Hibernates beneath logs, bark, mullein leaves, etc. Occurs in sum- 

 mer on flowers of yarrow, wild hydrangea and other plants. The 

 only blue specimens taken were in Lake County. 



