iloO FAAJILY LIU. — CIJRVSOMELID.E. 



KEY TO INIITAjNA GENERA OF CIIRYSOMEI TNI. 



<i. TiU'sal claws simitlc. 



h. Tliii(] Jdiiit ol tarsi entire or scarcely eiiiartrinate ( excel it in I'ihsd- 



cuiis, where it is hiloljed). 



c. Thorax uot niartiined at base: si>ecies mostly ratlier ehaif^ate, 



slightly convex, striped. XXXIII. 1'rasocuris. 



ce. Thorax margined at base ; species larger, more robust aud convex. 



il. Last joint of iialjii sluirt. truncate. 



e. Mescisternuni jirominent, forming a blunt tubercle between the 

 middle ciixa': front femora of male strongly toothed. 



XXXIV. Labidomera. 

 (r. .Mesiisternuni no| raised almve the level of the prosternum ; 

 femora siniiile. XXXV. Leptinotarsa. 



(/(/. Last joint of ])alpi not shorter than next to last. 



/. Tarsal claws ])aral1(>l, united at liase; claw joint dentate be- 

 neath. X.X-W'I. ZY(iOORAAtMA. 

 //'. T.-ii'sal claws divergent ; claw Joint simiilc. 



</. Sides (rf tliorax not tliickened; elytra with darker markings 

 limited by im]iressi'd ininct\n'es. 



XXXVII. Camiokaimia. 

 (/.'/. Sides (if thorax thickened: elytra without spots. 



XXXYIII. CiiRVSoMKn\. 

 bh. Third joint of tarsi emarginate or bilobed. 



//. Sides of thorax not thickened; elytra unicolored. 



/. Punctures of elytra in reguLnr rows; tibi.-e not grooved on the 



outer side. Pr,A()i()i)p:RA. 



//. Punctures of elytra dense and confused; libi;e grooved on outer 



side. XXXIX. (Jastroidka. 



Iili. Sides of thorax thickened: elytra often sjiotted or sjiotted and 



Mrlped. XL. LiXA. 



<i(i. Tarsal claws toothed or bilid ; tibia' not dilated and not toothed. 



XLI. Phyleodecta. 



XXXIII. pR.\socuRis Lat. 1802. (Or., "leek-tjreen + a spetir.") 



Rather small, (^oiifi-ato or oval, feebly convex species having the 

 iil)per surface brassx-ureen or bron/ed-bhick and striped with dull 

 yellow. The thrc(^ known s})ecies have liecn taken in the State, 

 while a fourth is herewith described for the first time. 



key to species of PRASOCL'KIS. 



u. Yellow strijies of elyti-a not united at base. 



h. Form elongate, jiarallel : length ."> or m<ire mm. I'l:!!. phellandrii. 

 hh. Form short-oval; lenulli not over i mm. 1M.".2. ovaiis. 



