WESTERN QUARTERLY REPORTER. 178 



Male. Body black ; front carinated ; eyes small, remote ; 

 thorax black, with a cinereous tinge, a longitudinal dorsal broad 

 black vitta, and a lateral impressed line ; wings dusky, inferiores 

 pale, with a dusky tip ; feet pale brownish ; tarsi black ; anterior 

 feet blackish ; abdomen black, incisure beneath pale ; setae rather 

 longer than the body. 



Female resembles the male, but the eyes are larger, contiguous, 

 and brown, with each a smaller, longitudinal, black one on the 

 inferior orbit ; abdomen black • segments above and beneath pale 

 at the posterior edge, a dorsal obsolete white line, and on each 

 two divergent, abbreviated, obsolete, whitish lines, originating at 

 the base of the segment and terminating near the middle of its 

 length ; setaa longer than the body. 



Length of the body of male seven-twentieths, female nine- 

 twentieths of an inch ; of the setae of male two-fifths, female 

 four-twentieths of an inch. 



This species is rather numerous on the Ohio, in the neighbor- 

 hood of Cincinnati, the 15th of May. 



Genus MYEMELEON Linn., Latr. 



M. abdominalis. — Pale testaceous, varied with black; abdo- 

 men very long. 



Inhabits Arkansa. 



Head and thorax pale testaceous, densely spotted and lincated 

 with black • antenna? clavate, blackish, the segments tipped with 

 testaceous ; nervures varied with black and white ; feet whitish, 

 spotted with black ; abdomen hairy, very much elongated, pale 

 testaceous, with longitudinal black lineations, posterior half 

 blackish. 



Length one and one-half inches ; of the superior wings one 

 inch. 



This we obtained near the Eocky Mountains. The abdomen 

 of the female is not longer than the wings, and the latter have a 

 distinct white spot near the tip on the costal margin. 



Genus BITTACUS Latr. [164] 



B, STiGMATERUS. — Body yellowish ; abdomen falcate, wings 

 with an opake carpal spot. 

 Inhabits Missouri. 



