THE LEAF BEETLES. 



1151 



off. Yellow stripes of elytra united at base, 

 c. Thorax a little wider than long. 

 cc. Thorax nearly twice as wide as long. 



2131 (6782). 



2183. VITTATA. 

 2134. OBLIQUATA. 



PRASOCURIS PHELLANDRII Linn., Syst. 



Nat., ed. 10. 1758, 370. 



Elongate, slender, parallel. Piceous or blackish, 

 feebly bronzed. Thorax broadly margined each side, 

 and elytra each with a discal and marginal stripe, 

 united at apex, dull yellow. Thorax quadrate, sides 

 almost straight, surface coarsely and sparsely punc- 

 tate. Elytra with regular rows of rather fine, close- 

 set punctures. Length 5-6 mm. (Fig. 405.) 



Lake County; frequent. April 2/S-May 2s. 

 Occurs in the sand dune regions on or beneath 

 the prickly-pear cactus (O/>uni!a- rafinfisqnii 

 Engelm). The larva is said to bore, in the steins 

 of marsh marigold (Caltlia] and other semiaquatic plant;. 



(Original ) 



2132 (- ). PRASOCTKIS OVALIS sp. nov. 



Short, oval, feebly convex. Blackish, slightly bronzed; (borax nar- 

 rowly margined with dull yellow: elytra each with a narrow marginal and 

 discal yellow stripe, uniting at apex, the latter oblique near b-ise but not 

 merging with the former. Thorax one-half wider than long, sides curved 

 in front of middle, surface sparsely and rather coarsely punctate. Elytra 

 oval, with regular rows of rather fine punctures, those of the fifth to 

 seventh rows widely separated. Length 3.5 4 mm. 



Lake, "Wells and Vigo counties; scarce. May 20-July 10. Oc- 

 curs on the leaves of sedges in low, moist places. 



2133 (6783). PRASOCURIS VITTATA Oliv., Entom., V, 1807, 595. 

 Elongate, narrow. Greenish-black, shining; thorax broadly marginc-;! 



on sides with reddish-yellow; elytra each with a reddish-yellow marginal 

 stripe and a narrow paler one on disk, the two united at base and apex: 

 under surface, legs and antenna 1 black, the tibia 1 sometimes pale. Thorax 

 but slightly wider than long, apex deeply emarginate, disk sparsely, un- 

 evenly and finely punctate. Elytra parallel, umbone carinate ; punctures 

 rather fine and deep, those of the first row somewhat confused. Length 

 3.5-4.5 mm. 



Lake County; scarce. May 5-May 21. Readily known from the 

 next by the more slender form and narrower thorax. 



2134 (6784). PRASOCTRIS OBI.IQVATA Lee.. Pracl. Entom.. IL IstiC,, 9. 



Elongate-oval. Black, tinged with greenish; (borax with broad mar- 

 ginal stripe, and elytra each with discal and marginal stripe, uniting at 



