THE DEATH-WATCH AXD DRFC STORE liKKTI.KS. 



869 



ing met astern inn. the latter never grooved for the reception of the 

 legs. The contractile or "doubnng-under" power is therefore 

 much less than in the tribes which follow. Eight genera are either 

 represented in the collection at hand or should occur in the State. 



KEY TO THE INDIAXA GENERA OF ANOBUNI. 



a. Front coxa? contiguous or narrowly separated (except in Oligomerus 

 sericans) ; process of presternum usually ending in a sharp point. 

 ~b. Last joint of both labial and maxillary palpi elongate, spindle-shaped ; 



antennae usually 10-jointed. V. Oligomerus. 



IjI). Last joint of maxillary palpi parallel and obliquely truncate; last 

 joint of labial palpi broadly triangular ; antennae 11-jointed. 



VI. Sitodrepa. 



aa. Front coxa? distinctly or even widely separated ; prostemal process with 

 parallel sides : antenna^ usually received between the coxa? in repose, 

 c. Antenna 1 not serrate, joints 9 to 11 long. 

 d. Tarsal claws with a broad basal tooth : form oblong, densely pu- 

 bescent and ornamented with tufts of erect hairs. 



YIT. Trichodesma. 



(hi. Claws not toothed. 



e. Ventral segments free, sutures distinct : tarsi narrow. 



/. Metasternum deeply excavated in front. Anobium. 

 //. Metasternum not deeply excavated in front, at most a little 

 concave. 



g. Third ventral segment short : tibiae not produced on the outer 

 side at apex. Till. Hadrobregmus. 



<jg. Third ventral segment long: tibia? acutely produced on the 

 outer side at apex. aTicrobregma. 

 ee. Ventral segments firmly united, their sutures, except the first 

 faint or obliterated at middle; tarsi stouter and broader. 



Cgelostethus. 



cc. Antenna? serrate, joints 9 to 11 not conspicuously longer than those 

 preceding : elytra with rows of punctures ; ventral segments united 

 at middle. IX. Trypopitys. 



V. Oligomerus E edt. 1848'. ( Gr . . ; small - femur. ' ' ) 



Front and middle coxa? without an intervening cavity for the 

 reception of the antennae ; first, third and fourth ventral segments 

 nearly equal and shorter than second and fifth. One species has 

 been taken in Indiana, while another may occur. 



KEY TO INDIANA SPECIES OF OEIGOMERES. 



a. Front coxa? distinctly separated: pubescence of head and thorax erect. 



1654. SERICANS. 



aa. Front coxa? contiguous or virtually so: pubescence entirely recumbent. 



OBTUSE S. 



