164 FREDERICK BLANCH ARC. 



with the outer angle more acute. Grenerally the males may also be dis- 

 tinguished by the pygidium being more deflexed and slightly longer, and 

 by the last ventral more deeply emarginate. 



The hind thighs in some species have a distinctly impressed line be- 

 neath, near and parallel with the front margin, and are then said to be 

 margined. 



Table of Species. 



Sides of prothorax beneath without entire transverse carina, and fimbriate with 



hairs near the margin 2. 



Sides of prothorax Ijeneath with entire transverse carina 9. 



2: — Posterior thighs not margined in front; clypeus quadridentate ; size small or 



moderate: color black ^' 



Posterior thighs margined in front 8. 



?,. — Hind tibise with two spurs I. iiigricorni.S. 



Hind tibise with a single spur 4. 



4. — Sutural indentation of clypeus deep, acute : prothorax with denticle oh the 



under side margin towards the apex 5. 



Sutural indentation of clypeus feeble, obtuse; no subhumeral carina; no pro- 

 thoracic denticle 8. simplex. 



5. — Subhumeral stria not carinate; coarsely granulate, spurs of anterior tibise 



alike in the sexes 6. 



Subhumeral stria carinate 7. 



6. — Prothorax more coarsely granulate; outer strise of elytra deeper, hind femora 



setigerous punctate 2. ebon us. 



Prothorax rather more densely and less coarsely granulate; outer strise of 

 elytra not deeper than the discal ; hind femora sparsely punctate, setse fine. 



■>. clepressipeiinis. 

 7. — Upper surface granulate ; hind thighs coarsely setigerous punctate. 



4. pratieola. 

 I^ot granulate ; hind thighs coarsely setigerous punctate. 



Very smooth, almost shining 3. pi'obus. 



Distinctly opaque. 



Thorax punctate 6. puiicticollis. 



Thorax impunctate, scabrous or alutaceous 7. lieContei. 



8. — Clypeus quadridentate, the two middle teeth slender, acute : hind tibife strongly 



arcuate; bright green or deep blue 9. cyanellus. 



Clypeus bidentate. 



Upper surface granulate. 



Ej'es larger; antennse ferruginous 10. vigilans. 



Eyes normal ; antennse fuscous. 



Granules of prothorax distinct; pygidium and last ventral granulate. 



11. laevis. 

 Prothorax finely scabrous, without distinct granules; pygidium and 



last ventral smooth 12. chalcites. 



Smooth, subopaque, bright green or deep blue 13. in<ligaceas. 



9. — Clypeus bidentate, bright green or bronze 14. viridis. 



Clypeus quadridentate; eyes larger; brown bronze, shining.15. perplexus. 



