THE CANADIAN ENTOMOLOGIST. 257 



process is shallower ; the apices of the inferior appendage are much 

 smaller and do not project beyond the latter process, as in liinulatum ; 

 while the "inferior process of the inferior appendage is shorter, broader 

 and blunter than in lumdatiuji. 



Male: Azure blue above, greenish yellow beneath. Head 

 black above, postocular spots blue, rather large ; eyes pale green, 

 dark olivaceous dorsally. Face i)ale green ; nasus and a line between 

 rhinarium and labrum black, middle lobe of labrum pale bluish. 

 Pronotum black, anterior lobe blue, lateral lobes pale yellowish green. 

 Thorax bronze-black, the blue humeral bands about as broid as the 

 black bands laterad of them, straight or but feebly curved, the mar- 

 gins subparallel ; pleura blue, fading beneath into pale yellowish. 

 Legs pale yellow, outer surfaces of femora and inner surfaces of 

 tibiae and whole of tarsi black. Abdomen blue above, yellowish be- 

 neath, marked above with bronze-black as follows : Seg. i with a 

 transverse basal spot ; 2 with a narrow transverse angular spot and 

 an apical transverse band; 3 except the basal two sevenths ; 4 except 

 the basal fifth ; 5 except a pair of spots on the basal sixth ; 6 and 7 

 except a narrow interrupted basal line; dorsum of 10, or a laterally 

 constricted spot upon it. Superior appendages blick, with a pale 

 terminal tubercle, inferior appendages pale, the sides and apices black. 



The female resembles that of C. resolutum, differmg as follows : 

 The posterior margin of the pronotum is slightly trilobate, the middle 

 portion arcuate as seen from behind (not at all trilobate in resoliiium)^ 

 the pale posterior margin is narrower and sometimes confined to this 

 middle lobe ; the thoracic bands, as in the male, are straighter, some- 

 what broader and the sides more nearly parallel. The abdomen is mar- 

 ked similarly to that of C. resohitii7?i, but the dark areas are somewhat 

 more extensive on segs. 1-3, and on 7 there is a basal interrupted 

 pale band, which is absent in the Utter species. The dorsum of 10 

 is entirely dark, except a narrow posterior marginal line. 



The two alcoholic specimens which I have are pale yellowish, 

 with a reddish tinge on the thorax, the transverse bands on 7 and 8 

 faintly bluish. 



Length of body, S, 29-31 mm., 9, 28-30 mm.; abdomen, ^, 

 22-235 "^n^> ?) 22-23.5 "i"^-; hind wing, $, 16-17 mm., 9, 

 18-18.7 mm. 



