Tat CANADIAN ENTOMOLOGIST. 15l 



subject of this paper. They may be separated among themselves as 

 follows, though occasionally forms will be found which intergrade 

 between varieties to such an extent as to render it difficult to place them 

 correctly from description alone. The arrangement followed is practically 

 that of Schaupp, with such additions and alterations as were rendered 

 possible or convenient by the smaller number of species here treated. 



CiciNDELA, Linn. 



A. Labrum very long, one-toothed. Thorax flattened, trapezoidal. 



Dull brown or black above, front of head excavated. Elytra 

 distinctly punctate, usually with a slightly bent, nearly trans- 

 verse median band, and three spots on or near the margin 



which is not bordered with white longilabris, Say. 



Green above and beneath, humeral lunule 



complete perviridis, Schaupp. 



B. Labrum short or only moderately long. Thorax not greatly flattened, 



quadrate or trapezoidal, 

 b. Thorax much narrowed behind; colours usually bright, either 

 purpHsh, green, blue or coppery. Markings often very 

 much reduced or incomplete, 

 c. Elytra without well-defined median band. 



Markings marginal only, colour purplish-coppery, elytra 

 indistinctly punctured, front of head sparsely 



pilose Lecontei, Hald. 



Markings consisting of small white or golden dots, 

 usually marginal only, but discal ones are often present. 

 Colour bright green. Elytra distinctly punctured, front 



of head not pilose sexgiiitata, Fab. 



cc. Elytra with median band distinct. Front of head pilose. 

 Thorax and elytra coppery or greenish coppery, margm 

 green. Body beneath bluish-green, purpurea, 01. 

 Thorax and elytra purplish, body beneath 



blue • limbalisi Lee. 



Thorax green or blue, elytra coppery, body beneath 



green or blue splendida, Hentz. 



bb. Thorax slightly or not at all narrowed behind. Colours sober, 

 brownish with white markings which are usually complete. 

 d. Markings complete, very broad, connected at margin. Body 

 very hairy, labrum three-toothed. Humeral lunule ob- 

 lique posteriorly generosa, Dej. 



