THE TIGER BEETLES. 



31 



ii. Color coppery or purplish-green ; front of head hairy; 

 elytra granulate-punctate. 6. purpurea. 



cc. Thorax slightly or not at all narrowed behind; markings com- 

 plete or nearly so ; colors usually dull. 

 j. Elytra! markings quite broad, connected at margin; humeral 

 lunule obliquely prolonged backward ; labrum three-toothed ; 

 larger, 16-18 mm. generosa. 

 jj. Elytra 1 markings narrower, less prominent, complete or in- 

 complete, not wholly connected at margin. 

 k. Humeral lunule obliquely prolonged backward; middle band 

 not extended along the margin. 8. vulgaris. 



A7,\ Humeral lunule C-shaped, not prolonged backward; mid- 

 dle band (except in 12-guttata) more or less extended 

 along the margin. 

 I. Labrum three-toothed; apical lunule bent forward and 

 inward. 9. ancocisconensis. 



//. Labrum one-toothed ; apical lunule not bent as above. 

 m. Marginal white line not connected with humeral lunule. 

 the latter not bent upward at posterior end; thorax 

 less hairy. 



». Elytral markings complete. 10. repanda. 



nn. Elytral markings broken into dots ; form broader and 

 flatter. 11. 12-guttata. 



mm. Marginal white line connected with humeral lunule, the 

 latter bent upward at its hind extremity; thorax 

 very hairy. 12. hirticollis. 



dd. Pubescence beneath prostrate or decumbent ; outer margin of 

 elytra in female angulate near apex, 

 o. Elytra white with a few dark markings. 15. lepida. 



oo. Elytra cupreous or bronze; markings complete. 



14. cuprascens. 



aci. Under side of abdomen partly red. 



p. Elytra dark brown without a marginal white band, the markings 

 normal. 16. rueiventris. 



pp. Elytra greenish or fuscous with a white submarginal band. 



MARGINIPENNIS. 



2 (17). Cicindela unipunctata Fab., Syst. Ent., 1775, 225. 



Dull brown, beneath dark blue; elytra rough with green 

 fovea and punctures, and with a triangular marginal white 

 dot. Length 16-18 mm. (Fig. 10.) 



Southern half of State ; frequent in Crawford and 

 Posey counties, less so in Vigo and Putnam. May 4- 

 September 5. Occurs singly or in pairs on hare spots 

 in upland woods and along woodland paths. Instead 

 of flying -when alarmed, it often attempts to hide be- Fig. 10. 

 neath leaves and stones, and can usually be readily (After LeugJ 

 captured with the hand. 



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