ROLAND HAYWARD. 117 



About a dozen specimens in all, of both sexes, have been exam- 

 ined. Of these two are from Arizona, the others from California. 

 For the examples in my cabinet I have to acknowledge my indebt- 

 edness to Mr. H. F. Wickham and Mr. Chas. Liebeck. 



103. B. bifasciatuin Mots. — Form slender, eloncjate, slightly convex : color 

 black or piceous, sometimes tinged with rufous, scarcely feneous, shining, the 

 elytra each with a large post-humeral spot and another submarginal one, behind 

 the middle, pale yellow, the latter often extending transversely nearly to the 

 suture; epipleurse. usually pale. Head as wide as the thorax at apex ; palpi tes- 

 taceous; antennse about one-half the length of the body, fuscous, the basal joints 

 testaceous. Prothorax subcordate, slightly wider than long, distinctly narrower 

 at base than apex ; apex truncate ; median line fine, abbreviated in front; trans- 

 verse impressions moderately distinct, the posterior deeper; basal impressions 

 moderately broad, deep, unistriate ; sides with the margin very narrowly reflexed 

 arcuate in front, sinuate behind ; hind angles rectangular, carinate. Elytra rather 

 more than one-half wider than the thorax, oblong-ovate, obsoletely striate, all the 

 strife abbreviated behind; intervals flat, the third with the first dorsal puncture 

 about one-third from base, the second about one-third from apex. Legs pale 

 yellowish testaceous. Length .13-. 17 inch ; 3.25-4.25 mm. 



A very well-marked species. It resembles the preceding more or 

 less closely in color and markings, but is abundantly distinct by the 

 characters given above. The striae of the elytra are nearly effaced, 

 feeble traces, especially of the inner ones, being seen after careful 

 examination. 



The name bifasciatam Mots, has about two years priority over that 

 of viundurn Lee, and must, accordingly, be restored. 



It is known to me from California, Oregon and Washington. 



Group xiv. Quadrimaculatum. 



Maxillse with the outer lobe biarticulate. Frontal grooves double, 

 oblique, the outer interrupted ; eyes large, prominent. Prothorax 

 cordate, subpedunculate or pedunculate, the hind angles small. 

 Elytra with the humeri rounded, the striae abbreviated behind, the 

 first nearly entire; third interval with two dorsal punctures. 



The species of this group are small and agree in the above char- 

 acters. In all but prcecinctum and dubitans the hind angles of the 

 thorax are not carinate, the carina being very fine and short in the 

 two just mentioned. The peduncle at the base of the thorax is very 

 short in most of them, attaining its greatest development in jucun- 

 dum, in' which it is well marked. 



The six species known to me may thus be separated : 



TRANS. AM. ENT. SOC. XXIV. APRIL, 1897. 



