AMERICAN COLEOPTERA. 



115 



SYNOPSIS OF CICINDELA. 



Humeral angles distinct; winged species '^• 



Humeral angles rounded ; wings aborted celeripes group. 



"D 



A. Abdomen not red ^. ...... -j^. 



Abdomen red 



B. Thorax margined or almost margined BB. 



Thorax not margined ^• 



BB. Abdomen sparsely clothed with decumbent hair, surface above sericeous, not 



hairy beneath obsoleta. 



Sides beneath sparsely clothed with erect hair, surface sericeous shining. 



iiigrocoerulea. 



Abdomen not hairy, elytra flat, foveate Uiiipuiictata. 



Abdomen sparsely hairy, front excavated, thorax hairy beneath, elytra with 



a vague depression at basal third loiigilabris group. 



Abdomen not hairy, elytra convex with depression at basal third and vague 

 longitudinal depressions almost continuous. 



Immaculate, green bronze robiista. 



Green bronze with broad white margin Bowditclii. 



D. Pubescence beneath erect or lacking E. 



Pubescence beneath decumbent F. 



E. Anterior tarsi % more broadly dilated G. 



Anterior tarsi "J, narrowly dilated H. 



G. Labrum well developed, either advanced in the middle, or evidently triden- 



tate, or both I- 



Labrum feebly developed, either obsoletely tridentate or feebly unidentate 



or not plainly dentate at all -T- 



(The divisions of section E are not strongly defined and the species towards the 

 end of each group approach the characters of the next. I have placed latesignata 

 in both I and J). 



I. Elytra impunctate scntellaris. 



Elytra strougly punctate at base, punctures becoming n^ore feeble behind 

 the middle, obsolete at apex. 

 Front hairy ; thorax smooth ; hairy beneath ; elytra not serrulate at apex 



piilclira. 

 Front hairy; thorax slightly rugose; hairy beneath ; elytra serrulate at 



apex P* ineriana. 



Front bald ; thorax slightly wrinkled at sides; bald beneath ; elytra not 



serrulate at apex- 



■ Hornii. 



Elytra granulate punctate; palpi black in both sexes. 

 Front not hairy. 



Not hairy beneath sexgiittaf a. 



Hairy beneath patruela. 



Front hairy ; hairy beneath purpurea group. 



Elytra less granulate, punctate ; palpi % pale at base ; front and beneath 

 very hairy. 



Punctuation feeble, apex not serrulate IbriMOsa group. 



Punctuation stronger, apex serrulate latesignata. 



Elytra sericeous, size very small viri«listicla. 



TRANS. AM. ENT. SOC, XXVIII. MARCH, 1902. 



