i 



North American Hymeno^tera. 283 



■ X 



nervures none ; stigma triangular, black : abdomen dull 

 honey-yellow at base ; first segment half as long as the 

 thorax : feet honey-yellow. 



Length over one twentieth of an inch. 



Although the wings entitle this species to a place in 

 Jurine's Psilus, yet the antennae are entirely different 

 from those of the type P. eJegans, resembling consider- 

 ably those of his P. antennatus. 



2. P. abdominalis. Antennae clavate, as long as the 

 body ; black, abdomen whitish. 



Inhabits Indiana. 



Body black : antenna, broken at the second joint ; 

 first joint one fourth the whole length, whitish ; second 

 joint obconic ; terminal joint ovate-fusiform, longer than 

 the three preceding joints together : ivings very deeply 

 ciliated: abdomen whitish, particularly at base: tarsi 

 whitish. 



Leng;lh about one fortieth of an inch. 



3. P. apicalis. Antennae at the tip of the head, 

 which is a little prominent. 



Inhabits Indiana. 



Hody black, polished : antennce as long as the body, 

 fuscous, with subquadrately moniliform joints ; basal long 

 joint honey-yellow ; terminal joint not much longer than 

 the preceding one ; inserted at the tip of the head ; be- 

 neath the antennae is a rather broad prominence ; costal 

 nervure but httle less than half the length of the wing, 

 triangular and black at its tip : feet honey-yellow: jpetiole 

 distinct. 



< 



Length one twenty-fifth of an inch. 



It is probable that the present insect is related to the 

 P. comutus of Panzer, but I have not the means of com- 

 paring. 



