THE TUMBLING FLOWER BEETLES. 1310 



2440 (7NI.M5). MOKDEI.LLSTI-.NA VAPIDA Lee., I'l'oc. Phil. Acad. Nat. Sci., XIV. 



Slender. feebly wedge-shaped. Pale clay yellow, sparsely clothed with 

 long yellow pubescence; elytra sometimes a little darker on apical lliinl. 

 Length 2-3.5 mm. 



Orange County; rare. May 28. Ranges eastward to New York. 



2441 (7803). MORDELLISTENA BiPLAGiATA Helm., Proc. Phil. Acad. Nat. Sci.. 



XVI, 1S64, 105. 



Rather robust, wedge-shaped. Black, elytra with a reddish-yellow oval 

 humeral spot: palpi, tibia?, tarsi, basal joints of antenna' and part of abdo- 

 men, reddish-brown. Length .",-4 mm. 



Throughout the State; frequent. May 3-October 23. Occurs in 

 spring, especially on flowers of Craht-'tjus; in autumn rarely on 

 fungus. 



M. dimidiata Helm., length 2-3 nun., was described from Illi- 

 nois; ]\f. intermixta Helm., length 2.5 mm., is known from Illinois 

 and New York; M. decor ella Lee,, 3 mm., .17. bipuxtuluta Helm., 2-3 

 mm., M. picipennis Smith, 4 mm., M. fulri-ollis Melsh., 2-3 mm., 

 and .!/. tniliiarix Lee., 2-3 mm. in length, liave all been recorded 

 from Cincinnati; bipustulata and fulricollis also from Illinois. .17. 

 scapularis Say, 4 mm. in length, is said to occur in the "Middle ami 

 Western States." 



2442 (7813). MORDELLISTENA OENATA Melsh., Proc. Phil. Acad. Nat. Sci.. 



II, 1845. 315. 



Narrow, slightly wedge-shaped. Head and front half of thorax red- 

 dish-yellow; elytra each with a large triangular spot on basal half, suture 

 and narrow margin or line behind middle, yellow. Length 3-4 mm. 



Throughout the State; scarce. May 21-July 13. 



2443 (7810). MORDELLISTENA COM ATA Lee.. Proc. Phil. Acad. Nat. Sci., 



1858, 75. 



Linear, slightly wedge-shaped. Color given in key; front and middle 

 legs partly dull yellow. Length 2.S-3.2 mm. 



Southern two-thirds of State; scarce. May 27-June 21. The 

 Indiana specimens are of the variety eervicalis Lee., and resemble 

 marfiiiidlix Say very closely, differing only in having one less ridge 

 on hind tibia 1 and first joint of tarsi. If these ridges and color of 

 thorax are variable, as some authorities claim, several of the forms 

 with black body and reddish head will have to be combined under 

 Say's name, 



2444 (7817). MORDELLISTENA ASPERSA Melsh.. Proc. Phil. Acad. Nat. Sci.. II. 



1S45. 314. 



Narrow, slender. Black ; pubescence rather dense and evenly distributed. 

 brownish-gray in hue. Hind tibi;p with a trace of a third ridge. Length 

 2-3 mm. 



