ANOBIIDES. 77 



Thorax not convex ; elytra somewhat convex, strongly 

 rounded at apex ; anterior coxae approximated, intermediate 

 pair placed slightly, and posterior pair far apart ; ventral 

 abdominal segments free, first sliglitly bisiniiate at apical 

 margin. Dryo'philus, Chevr. 



2, Antennae placed apart. 



Thorax not convex ; elytra rather flat, obtuse at apex ; 

 front pairs of coxae placed more or less apart, posterior pair 

 far apart ; ventral abdominal segments free, first slightly 

 bisinuate at apical margin. Pi^iohium, Mots. 



II. Thorax with a more or less prominent sharp edge. 



1. Breast with a depression for reception of head ; 

 elytra with striae. 



Tliorax more or less convex and uneven ; front pairs of 

 coxae placed more or less, posterior pair moderately far 

 apart ; ventral abdominal segments rarely soldered in 

 middle, first more or less bisinuate at apical margin. 



Anohium, Fab. 



2. Breast without depression for reception of head ; 

 elytra confusedly punctured. 



A A, Anterior coxae placed somewhat apart. 

 Thorax not convex ; ventral abdominal segments free, 

 first scarcely bisinuate at apical margin. Xestohium, Mots. 



a IB, Anterior coxae approximated. 



Thorax not convex ; ventral abdominal segments free, 

 first slightly sinuate at apical margin. Ernohius, Th. 



h. Antennae eleven-jointed, sawlike or comblike, last 

 three joints usually not, or scarcely larger than the rest. 



J. Thorax without depression beneath for reception 

 of head. 



1, Antennae comblike or fanlike. 



Lateral ridge of thorax fine ; intermediate coxae not 

 farther apart than anterior pair; posterior coxae not dilated 

 inward ; first ventral abdominal segment sliglitly bisinuate 

 at apical margin; body elongate. Ptilinus, Geoflr. 



2, Antennae sawlike. 



Lateral ridge of thorax prominent ; intermediate coxae 

 placed farther apart than anterior pair ; posterior coxae 



