254 RHYNCHOPHORA. 
16. 
17. 
18. 
19. 
20. 
2l. 
22. 
23. 
24. 
26. 
27. 
. Antennal club with a fringe or flagellum of long cirri 
Club with no fringe of long cirri 
. Apex of elytra retuse, with a complete circular margin ; flagellum 
very long Soe ee 
Apex of elytra with no complete circular margin . 
Apical margin of prothorax sinuate-emarginate . 
Apical margin of prothorax entire . . we ee 
Antennal flagellum very long, extending (when folded over) far 
beyond the lower apical angle of the club . ee 
Antennal flagellum or fringe extending at most to the lower ape 
angle of the club . . . . ~ 8 . 
Elytral declivity broadly impressed | on each side of the suture . 
Declivity with a feeble narrow impression on each side of the 
suture . 6. 6 6 we ew ew ew we ew we ew wt 
Elytra twice as long as the prothorax . . 
Elytra not more than one-half longer than the prothorax 
Antennal club triangular. . . . 1... ew ew 
Antennal club rounded. 
Antennal club triangular. . . . . 1. 1 1 we ew ew 
Antennal club rounded or subreniform 
Form robust, oblong-oval; forehead finely pubescent . : 
Form slender, oblong ; forehead densely pilose . soe ee 
Antennal club rounded, broader than long, with a flagellum 
extending (when folded over) to the lower apical angle . 
Antennal club subreniform, longer than broad, with a fringe 
extending little beyond the upper apical angle . 
Forehead densely pilose; fringe of antennal club arising from a 
large part of the inner face . . . . . oe . 
Forehead not densely pilose; fringe of antennal club arising from 
the superior border only and inconspicuous . 
. Black or piceous ; elytral declivity with small tubercles. . . 
Rufous, the elytra piceous; declivity not tuberculate 
Ferruginous-pitchy ; elytra finely punctured 
Black; elytra rather strongly punctured : 
Forehead weakly punctured; elytral declivity tuberculate . 
Forehead strongly punctured; declivity not tuberculate . 
Division I. 
15. 
26. 
compressicornis, Fabr. 
16. 
[transversus, Eichh. | 
17. 
18. 
2l. 
19. 
[ papulans, Hichh. | 
[ macrocerus, Hichh. | 
20. 
[abbreviatus, Kichh.] 
flagellifer, sp. n. 
22. 
23. 
ptyocerus, sp. 0. 
[redtenbacheri, Ferr. ] 
luridus, sp. n. 
24, 
comatus, sp. n. 
25. 
panamensis, sp. n. 
rubricollis, sp. n. 
[ fuscus, sp. n. | 
27. 
[columbianus, Hopk.] 
[ punctatissimus, Zimm.] 
Antennal club in the female very large, broader than long, rounded or trigonate, more or less evidently 
4-articulate when viewed from the outer face, furnished with a fascicle of long cirri, arising from the 
superior limb of the inner face and often aggregated into a flagellum sometimes more than twice the 
length of the club, 
To this division belong, besides the species referred to in detail subsequently, 
C. macroceros, C. abbreviatus, C. transversus, and C. papulans, all described by Eichhoft ; 
