BOSTRYCHUS. 83 



Labium rather small; last joint of maxillary palpi about 

 equal to third ; paraglossae prominent ; antennae ten- 

 jointed, club rarely as long as funiculus, not toothed, more 

 or less loose ; apex of elytra either rounded or obliquely 

 truncate ; anterior tibiae generally simple ; tarsi long and 

 narrow, second joint as long as third and fourth together. 



Bostrychus, Geoffr. 

 -B. Second joint of tarsi short. 



a. Club of antennae shorter than funiculus, not dis- 

 tinctly toothed. 



Labrum large ; last joint of maxillary palpi scarcely 

 longer than third ; paraglossae long, rather narrow ; an- 

 tennae ten-jointed ; elytra rounded and entire at apex ; 

 anterior tibiae toothed ; tarsi with first four joints about 

 equal in length. Dinoderus, Kedt, 



b. Club of antennae about equal in length to funiculus, 

 strongly sawlike. 



Labrum large ; last joint of maxillary palpi almost as 

 long as second and third together; paraglossae rather short 

 and olituse ; antennae ten-jointed ; elytra simply retuse 

 at apex ; anterior tibiae toothed ; tarsi with first joint very 

 small, next three about equal in length. Bhizop crtha,'^i&^\\ 



HosfrycJnis. 



Black ; elytra and alidomen red. Thorax not emarginate 

 in front, closely granulate, the granules larger in. front and 

 at sides ; elytra deeply, confusedly punctured. L. 3 — 5|- 1. 

 Very rare. B. capucinus, Lin. 



Dinoderus. 



Pitch-black, pubescence brownish. Thorax and elytra 

 closely granulate, the granules forming little teeth in front 

 and at sides of former, and rather indistinct rows on middle 

 of latter. L. 2| 1. Eare. D. substriatus, Payk. 



Hhi^opertJia. 



Pitchy-red ; antennae dull-red. Thorax convex, rough 

 in front ; elytra bare, shiny, with punctured striae. L. If 1. 

 Common. B. picsilla, Fab. 



LYCTIDAE. 



Clypeus separate from forehead ; last joint of maxillary 



G 2 



