CERAMBYCID^ 343 



apically, the black of the prosternum sharply limited at the sides, 

 not extending to the flanks, the elytra long, very strongly cuneiform, 

 the humeri unusually prominent, the two basal spots well developed, 

 the ante-median small, slender, very oblique to the suture, the 

 posterior wholly wanting; antennae nearly as in argus but with the 

 fifth and sixth joints equal, 3.8 mm. in length. Female much stouter 

 and with perfectly parallel elytra, broadly and evenly rounded at 

 apex, the prothorax much narrower than the elytra, the latter 

 maculate as in the male, except that the larger oblique ante-median 

 spots extend, very much narrowed, along the suture nearly to the 

 apex, the posterior spot small and more lateral than usual, much 

 nearer the side margin than the suture. Length (c?,9) 16.5 mm.; 

 width 4.8-5.1 mm. New Mexico (Jemez Springs), Woodgate. 



sexualis n. sp. 



Male with the prothorax similar but smaller, much narrower than the 

 base of the elytra, the black of the prosternum similar and with a 

 similar red nick at the middle anteriorly but with the lower part of 

 the flanks also more indefinitely black and the intercoxal process not 

 wholly black but red; elytra much less cuneiform and less elongate, 

 two and one-half times as long as wide, the post-scutellar spot wholly 

 wanting, the humeral minute, the ante-medial very small, transverse, 

 isolated, the subapical very small but in the usual position, nearer 

 the suture than the sides; antennae very slender but not quite so 

 long as in the two preceding, the fifth joint a little longer than the 

 sixth, which is 3.2 mm. in length. Female slightly stouter, distinctly 

 shorter, the elytra perfectly parallel, with the combined apices 

 evenly rounded, the two subbasal spots very small, the ante-medial 

 narrow, very oblique to the suture, extending finely along the latter 

 to the subapical spots combined in transverse rhombus. Length 

 (c?,9) 14.8-15.5 mm.; width 4.7 mm. Texas (El Paso), Dunn. 



texana n. sp. 



6 Elytra in the female conjointly broadly arcuato-truncate at tip, the 

 external angles obtusely rounded. Body parallel, moderately stout, 

 colored as usual, the subbasal elytral spots small, the post-scutellar 

 very minute, the submedian moderate, oblique but not quite attain- 

 ing the suture, the posterior largest, rounded, broadly truncated at 

 the suture, separated from the tip by one-half its length; prothorax 

 less than one-half wider than long, much less rounded at the sides 

 than usual; antennae (9 ) very slender, as long as the body, the last 

 joint much shorter than the eleventh as usual in that sex; prosternum 

 and the process wholly red, minutely, sparsely sculptured. Length 

 (9 ) 12.2 mm.; width 3.5 mm. New Mexico (Jemez Springs). 



subtruncata n. sp. 



Elytra in both sexes conjointly evenly rounded at apex 7 



7 Prothorax short, two-thirds wider than long, coarsely, deeply punc- 

 tate, with a distinct median impunctate line from apex to the median 

 callus; elytra parallel, slightly wider than the prothorax, the sub- 

 basal spots well developed, the submedian quadrate, slightly sinuate 

 before and behind, not quite attaining the suture, the subapical 

 moderate, posteriorly oblique but not involving the sutural bead; 



