WESTERN QUARTERLY REPORTER. 163 



gum, with the lateral basal margin of the segment:^, rufous ; venter 

 rufo-testaceous each side, dusky in the middle. 

 Length seven-twentieths of an inch. 



DOLERUS Jurine. 



D. COLLARIS. — Black; thorax, rufous before. 



Inhabits Missouri. 



Body entirely black ; with the exception of a yellowish-rufous 

 [73] anterior thoracic, triangle, and anterior segment or collar of 

 the same color, which descends on each side. 



Length to the tip of the wings nine-twentieths of an inch. 



TREMEX Jurine. 



1. T. SERiCEUS. [Ante, p. 73.] 



2. T. OBSOLETUS. [Ante, p. 74.] 



ANOMALON Jurine. 



' A. PLAVICORNIS. — Black ; antenna) yellow ; wings blackish ; 

 abdomen very much compressed. 



Inhabits Arkansa. 



Blouth piceous; thorax with two approximate dilated grooves 

 confluent behind ; scutel united to the thorax by a cavinated line 

 each side ; tip of the superior wings, and tip of the interior mar- 

 gin of the inferior wings, broadly margined with blackish : abdo- 

 men dilated towards the tip, broad, very much compressed; 

 first segment sub-cylindric, nearly as long as the second and third 

 uegments taken together, and geniculate at its union with the 

 Becond segment. 



Length more than one inch. 



I obtained an individual specimen near the Rocky Mountains. 



MUTILLA of Authors. [74] 



M. QUADRIGUTTATA. — First segment of the tergum with four 

 yellow dots. 



Inhabits near the Rocky Mountains. 



Body ferruginous, with confluent punctures ; antennas and 

 mandibles black at tip ; tergum black, first segment with four 

 yellow dots placed nearly equidistant two and two, the anterior 



