88 R. W. Dawson 



Bolbocerosoma Schaeifer 

 1906. Schaeffer: Trans. Amer. Ent. Soc, xxxii, pp. 250, 254. 

 1923. Dawson and McCoUoch: Can. Ent. Iv. pp. 



SYNOPSIS OF THE SPECIES 



1. Sutural interval and a rather large, slightly postmedian spot, 

 black, remainder of elytra reddish brown biplagiatum 



Sutural interval of elytra and terminal half largely or entirely 

 black ! 2 



2. Smaller, length about 7 mm.; second elytral stria obsolete, 

 fifth but feebly indicated, thus leaving six relatively broader 

 dorsal interspaces to the humeri IpiisillKm] 



Larger, length 9-12 mm. ; second and fifth elytral striae strong 

 and deep like the others, thus making eight relatively narrower 

 dorsal interspaces to the humeri bruneri 



Bolbocerosoma biplagiatum Dawson and McColloch. 



1923. Bolbocefosoma biplagiatum Dawson and McColloch, Can. Ent. 

 Iv. p. 



Specimens examined : Is, from Oxford, collected June 4, 

 1918. This species is not uncommon in Kansas. 



[Bolbocerosoma pusillum Dawson and McColloch. 



1923. Bolbocerosoma piisilhim Dawson and McColloch, Can. Ent. 

 Iv. p. 



No specimens of this species are at hand from Nebraska, 

 but it occurs frequently at Manhattan, Kansas, and may 

 therefore be found in southern Nebraska, especially in the 

 valley of the Republican river.] 



Bolbocerosoma bruneri Dawson and McColloch. 



1923. Bolbocerosoma bruneri Dawson and McColloch, Can. Ent. Iv. p. 



Specimens examined: 15 3, 15 9, from Maskell, Rulo, 

 Louisville, Omaha, Lincoln, Fairmont, Cams, Humphrey, and 

 Sowbelly Canyon in Sioux Co., collected from April to October. 



194 



