90 CASEY 



spaced, the spots not interrupted in continuity by the striae, though 

 sometimes divided and forming two or three spots, one or all of which 

 may become obsolete, the two or three anterior spots frequently united 

 between themselves longitudinally and internally 4 



Elytra each with four large flavate spots or narrower bands, which are dis- 

 continuous, being interrupted at the stride; abdomen with four series of 

 pale spots, generally obsolete in the males 11 



Elytra immaculate 16 



4 — Body smaller, more fusiform, the prothorax subevenly trapezoidal and 

 almost evenly punctate, nearly as in lineata, the elytral apices truncate, 

 feebly spiculose and bidentate, the strial intervals nearly flat and almost 

 equal. Atlantic regions 5 



Body larger, more elongate, the prothorax trapezoidal but strongly swollen 

 at the sides basally and with more irregular sculpture; elytra evenly 

 truncate at tip, with the outer angle obtuse to feebly dentate; elytral 

 intervals alternately strongly convex. Western North America 9 



5 — Second and third spots of the elytra when present always strongly and 

 outwardly diverging, approximate and generally united at their bases. 6 



Second and third elytral spots nearly transverse, widely separated longitudi- 

 nally even internally, the spots generally large, fully formed and not 

 at all comminuted 8 



6 — Larger as a rule or stouter and with a larger head, more southern in 

 habitat, the ante-coxal plate of the metasternum generally bimaculate 

 medially. Rather stout, convex, shining, black with feeble aeneous 

 lustre; head (9) well developed, rather coarsely, somewhat unevenly 

 punctate, the eyes moderate, widely separated, bordered internally 

 with orange-red, which becomes transverse superiorly, the front also 

 with two anterior spots and a central detached vitta of the same color; 

 antennse slender, not attaining the thoracic base; prothorax three- 

 fifths wider than long, evenly trapezoidal with straight sides, the apex 

 transverse, broadly arcuate medially, the base bisinuateas usual; punc- 

 tures rather coarse, unevenly sparse medially, closer laterally; scutel- 

 lum rounded, flat, polished and metalHc; elytra less than twice as long 

 as vAde, the sides gradually rounded and oblique posteriorly, though 

 feebly arcuate, to the apical truncature, the striae strong, closely punc- 

 tate, the intervals more coarsely punctate, nearly flat, alternately nar- 

 rower with a single series of punctures and slightly broader with the 

 punctures somewhat closer and more confused; flavate spots small and 

 much disintegrated; abdomen coarsely, closely and conspicuously 

 punctate, the basal sulcus rather deep, continuing virtually to the seg- 

 mental apex, the last segment with a transverse orange-red spot at each 

 side near the base. Length (9) 15.0 mm.; width 5. 85 mm. Florida. 



maculipcnnis Lap.-Gory 



A — Similar to maculipennis but narrower and relatively more elongate, 

 the head ( 9 ) fully as developed, with rather prominent eyes, the 

 lower flavate margin along the latter interru])ted at the middle and 

 not extending upward as far as the middle of the eyes, also with two 



