THE SHORT- WINGED SCAVENGER BEETLES. 



453 



g, Disk of thorax entirely piceous, the side and basal margins 



narrowly pale. S72. ciixcticollis. 



00- Thorax with a large black spot in each front angle, the two 

 rows united at middle. 873. anticus. 



ff. Thorax wholly reddish-brown or reddish-yellow. 



h. Dorsal row of elytra with few punctures ; male with a dis- 



tinct tubercle on the sixth ventral. 874. ptgmjxs. 



hit. Dorsal row of elytra with numerous punctures. 



875. TRINOTATUS. 



cc. Abdomen bi colored, red, the last two segments black ; dorsal row 

 with few punctures. 876. cixctits. 



hi). Head very elongate, twice or more longer than wide, widest at base ; 

 thorax entirely black ; legs piceous. qlm:sitor. 

 aa. Maxillary palpi short, stout, third joint sometimes pubescent. 

 i. Antenna? with joints 5-10 wider than long. 

 /. Elytra bicolored, black, the basal half red. S77. dimidiatus. 



jj. Elytra wholly dull reddish. 878. ixtruscs. 



ii. Antenna* slender, the joints longer than wide ; black, the elytra and 

 often the thorax reddish-brown, legs pale. 879. cingulatus. 



B. niger Grav., 7-11 mm., and B. axillaris Grav., 5-7 mm. in 

 length, have both been taken by Dury at Cincinnati. The latter is 

 a southern species which will be found, if at all. only in the southern 

 third of the State. 



872 ( 2661). Boletobius cincticollis Say. Trans. Amer. Phil. Soc. IV. 

 1834, 465 ; ibid. II, 581. 

 Piceous, shining ; legs and base and sides of thorax dull yellow : elytra 

 reddish-yellow with a large black spot near outer apical angle : antenna? 

 with three basal joints pale. Thorax not broader than elytra, hind angles 

 obtuse. Elytra slightly longer than wide ; the sutural and marginal rows 

 of punctures fine, distinct, dorsal row very faint. Abdomen sparsely punc- 

 tate, the hind margins of the segments paler. Length 3.5-5.5 mm. 



Throughout the State: frequent. May 11-October 10. Occurs 

 beneath bark, dead leaves and rotten wood. 



S73 (2662). BoLETOBirs anticus Horn, Trans. Amer. Ent. Soc. YI. 1S77. 

 117. 



Piceous or dusky yellow ; base of thorax and elytra pale reddish-yellow : 

 apical portion of thorax, a large spot at the outer apical angle of each ely- 

 tron and often a scutellar spot black : antenna? piceous. the apical and four 

 basal joints of former and the legs paler. Thorax slightly broader at base 

 than elytra, hind angles obtuse. Elytra slightly longer than wide, discal 

 row of punctures distinct, the other two rows faint. Abdomen as in cincti- 

 collis. Length 4-5 mm. 



One in TVolcott collection from Millers. Lake County. July 13. 

 A member of the boreal fauna. 



