NO. 9 GENUS CHLAENOBIA BLANCHARD CHAPIN 3 



4. Plantar surface of second segment of anterior tarsus bare, its margins fim- 



briate with long hairs ; pronotum bicolored (not always distinctly so in 

 greasy specimens), disk castaneous and flanks testaceous; body form un- 

 usually broad for genus panamana n. sp. 



Plantar surface of second segment pilose ; pronotum unicolorous ; body form 

 normally slender vexata Horn. 



5. Clypeus deeply concave, the anterior third or more strongly reflexed ; second 



segment of anterior tarsus about twice as long as broad latipes Bates. 



Clypeus shallowly concave, only the marginal fifth reflexed; second segment 

 of anterior tarsus at least three times as long as wide 6. 



6. Hind tibia gradually but distinctly widened from base to apex; lower half 



of inner face finely engraved and bounded beneath by a knife-edge 



margin 7. 



Hind tibia not evenly expanded from base to apex; lower half of inner face 

 without fine engraving, not bounded beneath by a knife-edge margin 8. 



7. Outer apical angle of middle tibia produced outward ; inner acute margin 



of hind tibia starting near base colimana Arrow. 



Outer apical angle of middle tibia not outwardly produced ; inner margin 

 of hind tibia acute in apical half only dissimilis n. sp. 



8. Spurs of hind tibia dissimilar in shape, the inner broader than the outer and 



twisted acquata Bates. 



Spurs of hind tibia slender, straight, and similar 9. 



9. Pronotum less densely punctured on disk than on flanks ; fifth visible abdomi- 



nal sternite without median patch of asperities scabripyga Bates. 



Pronotum less densely punctured on flanks than on disk ; fifth visible sternite 

 with median patch of asperities from which long hairs arise 



tumulosa Bates. 



Note : The males of the following species are unknown to the writer : cilia- 

 tipcs Blanchard, rodrignezi Bates, personata n. sp. 



FEMALES 



1. Antenna nine-segmented 2. 



Antenna ten-segmented 5. 



2. Pygidium with a deep, subconical excavation on apical half which is con- 



nected with the basal margin by a broad and rather deep groove 



arrowi n. sp. 

 Pygidium without a deep, subconical excavation near apex 3. 



3. Pygidium with a median longitudinal groove ; third and fourth segments 



of antenna equal ciliatipes Bl. 



Pygidium without a median longitudinal groove ; fourth segment longer 

 than third 4. 



4. Clypeus deeply concave, the anterior third strongly reflexed ; lateral mar- 



ginal bead of pronotum wider near anterior and posterior angles than 

 at middle; apical portion of pygidium with shallow, vaguely defined 



depression rodriguezi Bates. 



Clypeus not deeply concave, anterior fifth reflexed ; lateral marginal bead 

 of pronotum uniformly narrow throughout length ; apical portion of pygi- 

 dium with deep, well-defined depression aegrota Bates. 



