280 MEMOIRS ON THE COLEOPTERA 



the under surface polished, becoming olivaceo-opaque only toward 

 the sides of the metasternum, the hind tarsi much shorter, three- 

 fifths as long as the tibiae. The pygidium in both sexes has very 

 short stiff erect blackish and inconspicuous hairs throughout, and 

 the anterior tibiae have three small external teeth, even more feebly 

 developed than in sallei. Length (i d", i 9 ) 21.7-22.3 mm.; width 

 12.4-13.8 mm. Honduras (San Pedro Sula). Nicaragua Bates. 

 [ Chevrolat G. & P. ; ramidosa Bates] *chevrolati G. & P. 



Form and size somewhat as in the preceding, deep opaque-black, the 

 anterior parts without marking or mottling of any sort, the elytra 

 with a very even external straw-yellow margin, from base to apex, 

 having just behind the middle, a slender biramose deltoid inward 

 extension, which, at outer third or fourth, becomes a single straight 

 transverse line, extending almost to the suture; in the female the 

 marking is much broader, the deltoid outer bifurcation of the trans- 

 verse line solid and the transverse straight bar thick and even; 

 anterior to this there is no indication of inward extensions of the 

 lateral stripe at any point; head small as usual, opaque except at the 

 abruptly and moderately reflexed, truncate clypeal apex and evenly, 

 moderately punctured throughout; prothorax of the usual form, the 

 sides toward apex only very feebly and briefly sinuate, feebly punc- 

 tured postero-laterad, the fine submarginal stria not attaining the 

 base; elytra without so many fine punctures toward the humeri as in 

 chevrolati; pygidium with the deep and abruptly formed, vermiculate 

 lines finer than in that species and with the minute erect hairs paler 

 and more visible, shorter and stiffer than in sallei, more disintegrated 

 and with intervening opacity in the male; sexual characters of the 

 under surface and tarsi nearly as in chevrolati; anterior tibiae with the 

 small teeth less unequally spaced. Length (2 cf, i 9) 21.7-23.0 

 mm.; width 13.0-13.8 mm. Costa Rica *balteata n. sp. 



4 Under surface (cf) throughout brilliant silvery cobalt in color, the 

 legs, excepting the tarsi, similar in coloration. Body rather nar- 

 rowly oblong, somewhat greenish-flavate and opaque above; head 

 anteriorly, thoracic margin incrassately, mes-epimera and scutellum 

 brilliant silvery cobalt; head sparsely punctate, the punctures in 

 considerable part arcuate, flat, the clypeus quadrate, the margin, 

 especially at apex, acutely reflexed, the apex sinuate medially; pro- 

 thorax and elytra sparsely and irregularly, arcuately punctulate, 

 with smaller rounded punctures intermingled, the former discally 

 and at base almost impunctate; suture somewhat elevated, slightly 

 produced at apex; pygidium (cf ) yellow-opaque, moderately large, 

 unequally convex, vermiculato-strigose, briefly setulose; body be- 

 neath and the legs sparsely and more coarsely arcuato-punctate; 

 mesosternal process short, conical, not at all reflexed; anterior tibiae 

 finely and acutely tridentate. Length (cf ) 17 mm. Mexico (Pinos 

 Altos in Chihuahua) and Arizona (Cochise Co., Schaeffer). 



argenteola Bates 



A Allied closely to argenteola but smaller, the body (cf) only just 

 visibly narrowed from the elytral base, very feebly convex, opaque 

 and olivaceous above, the elytra slightly clouded with more 



