THE SHOKT-WIXGED SCATEXGET! BEETLES. 479 



KEY TO INDIANA SPECIES OF OLOPHBUM. 



a. Thorax twice as wide as long, sides broadly rounded into base and 

 apex ; length 5-6 mm. 923. obtectum. 



aa. Thorax subquadrate, sides subparallel. the front angles obliquely trun- 

 cate; length 4.5-5 mm. ROTUXDicoiiE. 



923 (2828). Olopheum obtectum Ericbs., Gen. Spec. Staph., 1S40, 865. 



Oblong-oval, convex. Uniform pleeous, shining ; antennfe, legs and very 

 narrow margin of thorax reddish-brown. Head rather coarsely and closely 

 punctate, with two shallow triangular impressions on vertex. Thorax 

 coarsely, evenly, not densely punctate, often with a faint rounded impres- 

 sion at middle of base. Elytra scarcely wider and nearly three times longer 

 than thorax, densely, rather coarsely and evenly punctate. Abdomen smooth, 

 its apex paler. Length 5-6 mm. 



Throughout the State : common. April 7-November 28. Oc- 

 curs on fungi and beneath bark and leaves. 



0. rotundicolle Sahib., is a boreal species reported from Cin- 

 cinnati. 



Pycnoglypta lurida Gyll., oblong, convex. brownish- 

 piceous, 2.8 mm. in length, is also recorded from the 

 same locality. 



LXXXIII. HoiiAijcji arav. 1802. (Gr., "even or 

 smooth.") 



Small elongate or oblong, subdepvessed species (Fig. diffummhuv. xio. 



.,^^,, . , .. „,.- . - tA Lake Superior spe- 



1<0), having the ,iomts ot hmd tarsi very short and cies. 

 equal, tibi» with fine spines ; maxillary palpi with last joint longer 

 than third: elytra reaching to or beyond the middle of abdomen. 

 The following have been taken or perhaps occur in Indiana. 



KEY TO INDIANA SPECIES OF HOMAUni. 



a. Thorax even, or sometimes with two more or less obsolete impressions 

 on the disk. 

 6. Sides of thorax not augulate at middle. 



c. Thorax very even, strongly convex ; length 2.3 mm. 924. hamatum. 

 cc. Thorax with a faint impres.sion each side of disk. 

 d. Elytra convex. 



e. Smaller, 3 mm.; black or piceous; abdomen almost smooth; 



elytra not striolate. HUiiEBOstM. 



ee. Larger, 4 mm. : reddish-brown ; abdomen strongly and densely 



punctate; elytra striolate. puxctiventbe. 



dd. Elytra sulidepressed ; thorax short, hind angles obtuse. 



925. floeale. 

 66. Sides of thorax augulate at middle: head and thorax shining, dis- 

 tinctly punctate. 920. fractum. 

 aa. Thorax uneven, the disk with two distinct foveie. 

 [31—23402] 



