TRACHYPHLOEUS. 21 9 



diffusely -placed row of bristles. L. 1 — 1| 1. Scarce. 



T. alterno.ns, Gyll. 



&. Anterior tibiae with three pointed teeth, central one 

 forked at apex. 



Black ; antennae and legs red-brown ; with a close 

 crusted covering, and on upper-side scantily set with 

 bristles. liostrum flat above ; thorax broadest before 

 middle, constricted toward apex ; elytra with indistinct 

 striae, alternate interstices sometimes sliglitly raised ; an- 

 terior tibiae as above. L. 1 — 1^ 1. Scarce. 



T. spinimanus, Germ. 



jB. Thorax with a more or less distinct central furrow. 



a. Apex of anterior tibiae with a strong tooth on outer- 

 side and another (bifid at apex) in front ; teeth small 

 in female. 



Pitch-black ; antennae and legs lighter ; upper-side 

 (especially on elytra) spotted with whitish scales ; inter- 

 stices on elytra with a row of thick, erect yellowish scales. 

 Eostrum with a broad furrow ; thorax almost double as 

 broad as long, strongly constricted before apex, sides 

 rounded ; elytra short ovate, with distinct striae. L. 1^ 1. 

 Common. T. scahricuhis, Lin. 



b. Apex of anterior tibiae with six minute spines at 

 apex. 



Ovate. Black; antennae and legs brown, with brown 

 or grayish-brown scales ; interstices on elytra with a row 

 of erect, rather thick bristles. Eostrum with a broad fur- 

 row ; thorax somewhat constricted toward apex, usually 

 with an oblong depression on each side of disc, sides 

 strongly rounded ; elytra almost ovate, with distinct striae. 

 L. 1^ — 1| L Eather common. T. scaher, Lin. 



c. Anterior tibiae not toothed at apex. 



I, Elytral bristles stout, clubbed. 



1. Second abdominal segment scarcely as long as 

 next two together, separated from first by a straight 

 suture. 



Ovate. Eeddish-brown ; elytra, antennae and legs 

 paler ; with erect, white scales throughout. Eostrum with 

 a central furrow ; sides of thorax much dilated. L. 1| 1. 

 Scarce. 1\ aristutus, Gyll. 



