No. 2365. XEW BEETLES OF THE GENUS AULICUS—SHAEFFER 153 



Body below and femora in about basal half or more red, last ventral segment 

 sometimes more or less black; blue sutural vitta above the median fascia always 

 broad and generally as wide or wider than the red humeral space, nearly parallel, 

 at most feebly dilated towards base; males with the inner claw of anterior tarsi 

 toothed and intermediate tarsi more or less distinctly so; posterior claws 

 simple; fifth ventral segment of male moderately deeply arcuate-emarginate; 

 last dorsal segment at apex emarginate at middle in the male, broadly rounded 

 in the female .femoralis Schaefter. 



3. Antennae with joints six to eight in the male, or seven and eight in the female. 



triangularly dilated and intermediate in size between the preceding joints and 



the club, more strongly pronounced in the male than in the female 8 



Antennal club abruptly three-jointed 4 



4. Sutural vitta above the submedian fascia broadly arcuately dilated near base, 



subcordiform 5 



Sutural vitta never broadly, arcuately dilated near base, the sides subparallel or 

 gradually diverging toward base 6 



5. Palpi red; under aide bluish-black, except the first three or four ventral segments, 



which are reddish ; legs black or piceous, femora more or less reddish ; last ventral 

 segment of male deeply arcuate-emarginate; last dorsal segment of male at apex 

 deeply emarginate at middle; outer claws of the first and second pair and the 

 inner claws of the posterior tarsi distinctly cleft in the male; small species about 



6.5 mm fissipes, new species. 



Palpi black or piceous; underside and legs bluish-black, ventral segments some- 

 times narrowly reddish at sides; fifth ventral segment of male broadly emarginate 

 at apex; last dorsal segment sub triangularly emarginate at apex in the male and 

 truncate in the female; claws in both sexes simple; large species, about 8-10 mm. 



nigriventris, new species. 



6. Large species about 10 mm. long; form rather elongate; blue sutural vitta above the 



median facia broad and wider than the red humural space; underside and legs 

 bluish-black, ventral segments at sides and fifth at apex largely red, fifth ventral 

 segment of male at apex broadly arcuate-emarginate, and last dorsal feebly 



emarginate nero Spinola. 



Smaller species about 8 mm. long or less; form rather robust; all the claws, or the 

 inner claw of anterior and middle tarsi of male toothed 7 



7. Elytra densely and relatively coarsely punctate; blue sutural vitta above the 



median fascia as wide or wider than the red humeral space; humeri with a black 

 3pot; body below metallic blue; ventral segments red, but sometimes at sides 

 more or less black; fifth ventral segment in the male deeply arcuate-emarginate 

 at apex; last dorsal segment in the male emarginate at middle and broadly 

 rounded in the female; male with inner claw of anterior and middle tarsi more or 



less distinctly dentate, posterior claws simple femoralis Schaeffer. 



Elytra relatively sparsely punctate, the punctures well separated; sutural vitta 

 above the median fascia narrow, not as wide as the red humeral space; humeri 

 without black spot; body below blue or bluish-black; all ventral segments at 

 sides and last at apex red; fifth ventral and last dorsal segment of the male 

 scarcely emarginate, last dorsal segment of the female emarginate at apex; all the 

 claws of the male cleft, with the inner tooth shorter than the outer. 



dentipcs, new species. 



8. Body below and legs entirely metallic blue; sutural vitta above the median fascia 



as wide or wider than the red humeral space; humeral spot absent; fifth ventral 

 segment rather deeply arcuate-emarginate and last dorsal segment rounded at 

 apex in the male, the latter in the female narrowly, subtriangularly emarginate 

 at apex. The inner claw of the front tarsi toothed in the male. 



antenna tus, new species. 



