/ 



North American Hymeno^iera. 265 



discoidal cellules ; and another blackish band across the 

 stigma, along the descending nervure to the small second 

 cubital and continued dilating to the anal margin, where 

 it is almost confluent with the other band ; terminal third 

 hyaline ; inferior wings blackish, yellowish on the basal 

 third, this color extending along the costal margin. 

 This is larger than either of the preceding species. 



Chelonus, Jur. 



1. C.parviis. Black; base of the antennae, and ante- 

 rior thighs yellowish. 



Inhabits Indiana. 



Body densely punctured : antenncBy first joint beneath 



honey-yellow : palpi whitish : thorax Avith dilated punc- 

 tures, particularly on the disk and anteriorly : scutel and 

 metaihorax with dilated punctures; the latter truncate 

 behind : wings hyaline ; nervures blackish, pale at base ; 

 stigma large ; second cubital cellule small, subtriangular : 

 ahdomen without apparent sutures; densely punctured; 

 the punctures longitudinally confluent into wrinkles, 

 which are more prominent at base : venter profoundly 

 concave, excavated : cox(B black : trochanters whitish : 

 thighs^ anterior pair honey-yellow ;- the other pairs 

 blackish : tibia whitish, posterior pairs blackish at tip : 



tarsi whitish. 



Lenorth over one tenth of an inch. 



The neuration of the wings corresponds with the den- 

 tdtus, F., but the abdomen exhibits no more appearance 

 of divisions than that of sulcatus, Jur., and the venter is 

 very profoundly excavated. The metathoracic spines are 

 very short and obtuse. 



(SiGALPHUs, Long's Ex 



VOL. I- PART III. 35 



