THE SHORT- WINGED SCAVENGER BEETLES. 



455 



879 (2659). Boletobius cingulatus Mann., Nouv. Arrang. Brachl., 1830, 04. 



Black, shining; elytra and often the thorax dull red; legs reddish-yel- 

 low; antennse piceous, the terminal and two basal joints pale; abdomen 

 pieeous, the apical half of fifth and sometimes the sixth segment reddish. 

 Thorax slightly broader at base than elytra, hind angles rounded. Elytra 

 slightly longer than wide, sutural and marginal rows of punctures fine, dor- 

 sal row obsolete. Abdomen sparsely and coarsely punctured and pubescent. 

 Length 7 mm. 



Lake and Steuben counties; rare. May 21- July 6. A northern 

 species ranging from Pennsylvania to Canada and Oregon. Re- 

 sembles intrusus but larger, the elytra more distinctly red and the 

 antenna! joints mostly longer than wide. 



LXVII. Mycetoporus Mann. 1830. (Gr., "mushroom + to 



walk.") 



Small, slender species having the elytra smooth and shining, 

 with three (rarely four) rows of punctures bearing fine setae, these 

 placed one row in the sutural channel, one extending from humerus 

 to tip, the third along the side margin. The thorax always has four 

 punctures along the apical margin, two basal, three on each side 

 margin and two, one behind the other, between the middle of disk 

 and side margin. Two of the species have two additional "discal" 

 punctures. 



KEY TO INDIANA SPECIES OF MYCETOPORUS. 



a. Thorax with two discal punctures slightly behind the middle. 



6. Elytra with one discal row of punctures. 880. americanus. 



hi). Elytra with two rows of discal punctures. 881. consors. 



da. Thorax without discal punctures. 



a Middle and hind tibise with coarse unequal spinules at tip ; third 

 joint of maxillary palpi slender, similar to second. 



882. HUMIDUS. 



cc. Middle and hind tibiae with a dense fringe of equal spinules at tip. 

 d. Abdomen reddish-yellow, each segment paler at tip ; elytra not dis- 

 tinctly bicolored. 883. splendidus. 

 (Id. Abdomen reddish-brown, its last two segments black ; elytra bicol- 

 ored, piceous at base, apical third red. flavicollis. 



880 (2674). Mycetoporus americanus Erichs., Gen. Spec. Staph.. 1840.285. 



Elongate, slender. Dark reddish-brown to piceous, shining; elytra some- 

 times piceous with only a small humeral spot and narrow apical space red- 

 dish-brown, more often wholly reddish-brown except a dark scutellar space : 

 legs and basal joints of antennae paler. Thorax with two small punctures 

 just behind the middle in addition to the usual marginal ones. Elytra as 

 long as wide, with the usual rows of punctures and one to three additional 

 punctures near apex inside of the humeral row. Abdomen sparsely pubes- 



