THE TUMBLING FLOWER BEETLES. 



1311 



KEY TO INDIANA SPECIES OF TOMOXIA. 



a Last joint of maxillary palpi long, triangular; scutellum emarginate be- 



U. J 2421. HI I) F.N TATA. 



oa LasMomt of maxillary palpi broadly tataftet-snaped : sentellnm tri- 



UU. jv^t 2422. HILARIS. 



angular. 



2421 (7773). Tomoxia bidf.ntata Say. Journ. Phil. Acad. Nat Bel., HI. 

 1S24, 277 ; ibid. II. 164. 

 Robust, wedge-shaped. Brown, varied wttn ash-gray pubescence as fol- 

 lows four stripes ou thorax radiating from the middle of front margin, 

 Meh w h the side margins, is also ash-gray: elytra each with three or 

 ^ur stripes on basal half, a broken erossband behind middle ami the apex 

 aT-gray : a large rhomboidal brown spot on each near base. Length 10- 

 13 inm. 



Lake Vise and Posey counties; scarce. February 6-Jttne 7. 

 Occurs on dead trees. T. UneeO* Lee, 5-7 mm, in length, the elytra 

 marked with narrow ash-gray lines, is now recognized as the male ot 

 bidentaia. 



2422 (7776). Tomoxia hilabis Say. Best. Journ. Nat. Hist., I. 1835, 100: 

 ibid. II. 661. 



Form wedge-shaped: more slender than We„tat«. Black, varied with 

 pubescence: elytra with a narrow sub-basal band ot browmsb- 

 % pubeseence and a broader one behind the middle, the two connect^ 

 along the suture and margined with ash-gray pubescence. Length 9-13 mm. 



Described from Indiana. Two in Stein collection, probably from 

 Pcsey County. 



IV. Mobdella Linn. 1758. (L., "bite.") 

 Rather large wedge-shaped forms having the scutellum triangu- 

 lar ■ anal stvle usually long ami slender : last joint of maxillary palpi 

 Ion- triangular and obliquely truncate (except in the male of oou- 

 lata). Nine of the 19 recognized forms have been taken m the 

 State, while two others may occur. 



KEY TO INDIANA SPECIES OF MOBDELLA. 



a Anal stvle short and truncate: dull black: thorax and elytra sprinkled 

 wi^smaH spots of silvery pubescence, the latter with narrow inter- 

 rupted band on apical third composed of confluent spots. boreaiis. 



aa Anal style long and slender. 



" 7,. Last joint of maxillary palpi triangular, the sides unequal. 

 c. Elytra dark, without conspicuous markings. 

 [S3— 23402] 



