ART. 2 REVISION" OF TEIBHABDA NORTH OF MEXICO — BLAKE 19 



times a dark margin encircling eyes. Antennae with third and 

 fifth joints subeqiial. Prothorax approximately twice as broad as 

 long, with arcuate sides; surface alutaceous with scattered coarse 

 punctures; spots large and black. Scutellum black. Elytra 

 coarsely and confluently punctate, covered with long, dense, pale 

 pubescence, entirely metallic green except for pale margin or with 

 a median narrow pale vitta, wider at base and usually extending 

 well down to apex, but not joining apical pale margin (in one speci- 

 men from Custer, S. Dak., the pale vitta reaches apex). Body be- 

 neath pale with metasternum and abdomen except for last ventral 

 segment dark with green luster. Length, 5 mm. to 6.5 mm. ; width, 

 2.3 mm. to 3 mm. 



Type locality. — " Kansas, Nova Scotia " (the Nova Scotia speci- 

 mens are here referred to T. neoscotiae). 



Distribution. — Alberta (Waghorn, Blackfalds, Edmonton) ; Mon- 

 tana (Bear Paw Mountain, Beaver Creek) ; Wyoming (Yellowstone 

 Park, Rock River) ; Colorado (Buena Vista, Pingree Park, Pagosa 

 Springs, Creede, Colorado Springs) ; New Mexico (Fort Wingate, 

 Pecos) ; South Dakota (Custer) ; Kansas (Douglas County) ; Michi- 

 gan (Trout Lake). 



Food plant. — Goldenrod, Solidago (F. S. Carr). 



Remarks. — Compared with T. neoscotiae, specimens of this species 

 are a little smaller, the vittae are decidedly green, with more me- 

 tallic luster, the plaga over the head frequently and the ventral 

 surface nearly always have a green luster, as is not the case with 

 neoscotiae, and the entire elytra, except for the margin, are fre- 

 quently green. The shape of the elytral vittae is somewhat different 

 in that the pale vitta is usually wider near the base of the elytra, 

 converging and becoming attenuated toward the apex. The third, 

 fourth, and fifth antennal joints are usually somewhat different in 

 length from the corresponding ones of neoscotiae, in which the fourth 

 is considerably longer and the third not subequal to fifth. 



Prof. T, D. A. Cockerell has named the variety without vittae 

 virescens.^ 



8. TRIRHABDA VIRmiCYANEA, new species 



Plate 1, Figure 8 



Description. — Small, parallel, coarsely punctate, pale with broad 

 black occipital and pronotal spots ; elytra except for margin usually 

 bright blue green, occasionally with a pale median vitta, lightly 

 pubescent ; ventral surface more or less dark. Head alutaceous with 

 punctures obsolete and confluent, moderately pubescent; a wide 

 black occipital band, sometimes attaining margin of eyes, rarely 



" Trirhdbda convergent virescens, Ent. News, vol. 1, p. 4, 1890. 



