No. 2365. KEW BEETLES OF THE GENUS AULWUS—SHAEFFER 155 



middle tarsi less distinctly so, posterior claws simple. Length 

 6-8 mm. 



Arizona: Nogales (Nunenmacher) ; Santa Rita Mountains, (Wick- 

 ham) ; Chiricahua Mountains, (Owen) ; Coyote Mountains, (Lutz) ; 

 Tucson, (Horn coll.). 



This species is the only one which differs very much in the coloration 

 of head, pro thorax, and underside. Specimens taken with the 

 typical form by Doctor Lutz have the head and prothorax above and 

 below, also the mesosternum, metasternum, and all the femora 

 bluish-black ; the ventral segments in these are either red or red with 

 black spots at sides; otherwise they do not differ from the typical 

 form. 



AULICUS FISSIPES, new species. 



Male. — Head black, moderately coarsely punctate, punctures 

 more dense anteriorly and posteriorly than at middle; palpi and 

 antennae pale reddish. Prothorax black, sides moderately arcuate; 

 surface rather sparsely punctate with moderately large punctures; 

 anterior constriction as usual more feeble at middle than at sides. 

 Elytra with moderate, not closely placed punctures, pubescence short 

 and sparse; intervals between these punctures scarcely rugose; 

 common blue sutural vitta broadly, arcuately dilated around the 

 scutellum, narrowing behind to the median fascia but absent between 

 the latter and the apical blue spot; median fascia sub triangular, 

 broadest laterally and narrowing toward suture, anterior margin of 

 this fascia very oblique; apical blue spot divided narrowly for half its 

 length by the red suture. Underside obscure metallic-green; abdo- 

 men red, last ventral segment black at middle and deeply, arcuately 

 emarginate at apex; ventral segments rather sparsely punctate; 

 femora red, apically black; tibiae black, but anterior and intermediate 

 pair reddish at apex; tarsi black, the inner claws of the front and 

 middle tarsi and outer claws of hind tarsi distinctly cleft. Last 

 dorsal segment at apex emarginate at middle. 



Female. — Palpi pale reddish; antennal joints less stout and the 

 three-jointed club black; elytra more rugose than in the male and the 

 blue median vitta more fully developed, reaching to the lateral 

 margin and about as wide at suture as near lateral margin, anterior 

 margin of vitta laterally strongly angulate, posterior margin less 

 strongly; posterior femora largely black and fourth and fifth ventral 

 segment black; sides red; all the claws simple. Length 6.5 mm. 



Type.— Cat. No. 23083, U.S.N.M. 



Tucson, Arizona (type, male) ; San Jose del Cabo, Lower California 

 (female) . 



Of this species I have seen only two specimens of which the type, 

 preserved in the United States National Museum, was collected on 

 August 24, 1913, by W. D. Pierce on cotton, and the allotype is in 

 the Brooklyn Museum. 



