23 



Long. 3'/ 4 — 3 3 / 4 lin. — Freqiiens in provinciis Casan., 

 Simbirsc, Orenburg., et Saratoviensi; volat Maio. 



2. D. late rit lu s Klug, rufus, antennis, capite, 

 pectore, scutello, metathorace pcdlbusque totis ni- 

 gris; — alls llmpldls, vlx nlgrlcantl tlnctls. (Fem.). 



Var.l ß. tibiis omnibus tarsisque rufis, abdominis se- 

 gment» primo nigro. 



Long. 3 5 / 4 — 4 5 / 4 Uli. — Yolat in prov. Casan. sub 

 finem Maji. — Var. ß. cepi 20 Junio — Mas liujus spe- 

 ciei laiei. 



3. J). trlpllcatus Klug, infus, antennis, capite, 

 pectore, maculls tribus thoracis pedlhusque totls 

 nlgrls; — alls vlx nlgrlcantl tlnctls. (Fem.). 



Long. 4 5 / 4 liii. — Semel cepi in prov. Casan. sub 

 finem Maji. — Mas latet. 



4. D. m a dl du s Klug, nlger, abdomlne rufo: se- 

 gmento prlmo ultlmlsque duobus aut sesqultertlls 

 nlgrls; antennis subsetacels, abdomlne paulo lon- 

 glorlbus; — alls llmpldls. (Mas.). 



Long. 4 J / 8 bn. — Semel cepi in prov. Casan. 8 

 Maji. 



5. D. dublus Klug, nlger, abdominis segmentls 

 % — 4 , tibiis anterlorlbus tarsisque rußs ; antennis 

 subsetacels crasslusculls longUudlne abdominis; — 

 alls llmpldls, vlx nlgrlcantl tlnctls. 



Eadem magnitiuliiie, qua prœcedens. — Semel cepi 

 marem in provincia Casanensi sub finem Maji. 



6. D. hacmatodes Schrank, с viridi aut cœrulco 



