92 U.S. NATIONAL MUSEUM BULLETIN 290 



lateral margins rather distinct, broad, somewhat broader apically 

 than at base. Antennae in female over half length of body, in male 

 about three-fourths length of body; basal two to five segments orange, 

 remainder blackish. 



Pronotum: Deep orange to red, usually with two vague, yellowish 

 spots at base; lateral margin narrowly to rather broadly yellowish, 

 this narrowly interrupted by red at middle; apical margin narrowly 

 yellowish. Punctation dual, smaller punctures minute, larger punctures 

 small, not dense. 



Elytra: Baclcground color creamy yellow to light orange; dark 

 markings brown to black, rather sharply delimited; each elytron 

 with three transverse, dark, undulate bands, all broadly confluent 

 with suture, first centered at basal third, attaining neither base nor 

 lateral margin, second centered behind middle, attaining lateral 

 margin, third centered before apex, not attaining lateral margin. 

 Each elytron with seven rows of punctures, usually with an incom- 

 plete row between fifth and sixth; fifth and sixth rows usually con- 

 fused; punctures small, dense as usual, finer to apex; inner and outer 

 rows distinct at apex and clearly meeting. 



Ventral surfaces: Ventral surface and legs orange to light reddish, 

 legs brownish apically; with yellowish on prosternum, mesosternum, 

 mesepimeron, middle of first abdominal segment at base, and sides 

 of abdominal segments. Anterior margin of male prosternum feebly 

 produced into a broad, arcuate lobe or in female not produced and 

 evenly arcuate. Pygidium yellowish apically, with median line, sides, 

 and basal half orange or reddish; with a feeble, median carina; coarsely 

 punctate. Fifth abdominal segment in female with a large, oval, deep 

 depression at center as usual or in male feebly depressed. 



Length: 4.0 to 4.4 mm. 



Type data. — The male holotype bears USNM type number 69243 

 and the data "Tucson, Arizona, Wickham, August 4, Wickham col- 

 lection 1933." The allotype bears the data "on catclaw 15 mi. N. of 

 Presidio Tx. 29.4.47 J. H. Kussell." The single female paratype has 

 the following: "Aug. 5-7 Tucson, Arizona, Wickliam, Wickham col- 

 lection 1933." All types are in the U.S. National Museum. 



Discussion. — The species is most similar to cowaniae and can be 

 distinguished from it by the elytral pattern. In cowaniae, the dark 

 elytral markings are mutually confluent lateral to the elytral suture; 

 in this species, they are not confluent (first and second bands) or 

 meet only at the suture (second and third, sometimes first and sec- 

 ond). The specific name refers to the three undulate bands of the 

 elytra. 



