THE DEATH-WATCH AND DRUG STORE BEETLES. 869 



ing nietasteruuin. the latter never grooved for the reception of the 

 legs. The contractile or " doubling-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 INDIANA GENERA OF ANOBIINI. 



*/. Front coxa? contiguous or narrowly separated (except in Oliuoiiicnix 



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

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

 antenna^ usually 10-jointed. V. OLIGOMERUS. 



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

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



VI. SlTODRKI'A. 



<t<t. Front cox;e distinctly or even widely separated; prostemal process with 

 parallel sides: antenna' usually received between the coxa? in repose. 

 <: Antenna 1 nut serrate, joints !) to 11 long. 



</. Tarsal claws with a broad basal tooth; form oblong, densely pu- 

 bescent and ornamented with tufts of erect hairs. 



VII. TRICHODESMA. 

 <1<I. Claws not toothed. 



c. Ventral segments free, sutures distinct; tarsi narrow. 



/. Metasternum deeply excavated in front. ANOBIUM. 



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



concave. 



</. Third ventral segment short ; tibia 3 not produced on the outer 



side at apex. VIII. HADROBREGMTS. 



<>!/. Third ventral segment long; tibia 3 acutely produced on the 



outer side at apex. MICROBREGMA. 



cc. Ventral segments (irmly united, their sutures,' except the first 



faint or obliterated at middle; tarsi stouter and broader. 



OCELOSTETHUS. 



c<: Antenna' serrate, joints !) to 11 not conspicuously longer than those 

 preceding; elytra with rows of punctures; ventral segments united 

 at middle. IX. TRYPOPITYS. 



V. OLIGOMERUS Redt. 1S4S:. (Or., "small + femur.") 



Front and middle coxa? without an intervening cavity for the 

 reception of the antenna?; 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 SIMCCI KS OF OMGOMERVS. 



a. Front coxa- distinctly separated; pubescence of head and thorax erect. 



K',r,4. SERICANS. 

 .. Front COXM> contiguous or \irlually so; pubescence entirely recumbent. 



OBTUSUS. 



