MONOGRAPH OF THE NORTH AMERICAN PROCTOTRYPID^. 389 



the submargiual vein terminates in a short or piinctiforni marginal vein 

 just before tlie middle of the wing; and there is a distinct oblique stigmal 

 vein, usually three times as long as the marginal, with sometimes a 

 distinct backward directed branch; the costal cell is open ana the basal 

 nervure is present, although faint or subobsolete. 



Abdomen long-oval, subtruncate or but slightly pointed at apex, the 

 petiole in the $ is usually short, in the $ long, woolly, or pubescent; 

 the second segment occupies most of the remaining surface and has 

 sulci at base above. 



Legs clavate, pubescent, or pilose, the basal joint of posterior tarsi 

 twice as long as the second. 



Dr. Forster erected the genus Eniomacis upon specimens with a 

 "heart-shaped piece"' cnt out of the apex of the front wing, but this 

 character in itself will not hold to found a genus, ajid I have here joined 

 it to Hemilexis, as I can find no other character to separate them. I 

 Lave species with emarginate, slightly emarginate, and entire wings, 

 but in all other essential characters, viz, the 13-jointed antennoe and 

 two furrows on the mesonotum, they agree with Hemilexis, so that if I 

 have properly identified these genera they should be united. 



JSTothing is known of the parasitism of the genus, except what Fors- 

 ter tells us: that he bred specimens of an Untomacis from a spider's 

 nest. In all i)robability the spider was already infested with a Dipter- 

 ous parasite, Lencopis sp., and the Diapriid came from the Dipteron. 



Three species are known to me, sei^arated as follows: 



Apex of wings more or less eniargiiiated, .stigmal vein longer than marginal. 

 Autennte yellow, gratliially iucrassated, moniliform, the last joint large, fusiform, 

 fuscous. 5 . 



Legs reddish-yellow ; petiole hlack H. subemarginata, sp. uov. 



Antennie subclavate, submoniliform, the tlagellum fuscous. 9 • 



Legs and petiole, honey-yellow H. mellipetiolata, Ashni. 



Apex of wings entire, stigmal vein more than twice as long as the marginal. 

 Antennte tiliform, fuscous, the first and second flagellar joints elongate, the second 

 the shorter and jiroduced toward one side at apex, the folloAving 

 joints submoniliform. ^ . 



Legs rufous; trochanters, til>ia>, and tarsi yellow H. californica, sp. nov. 



Antenna! filiform, brownish-yellow, the second flagellar joint a little longer than 

 the first and third. <? . 

 Legs honey-yellow H. subemarginata, sp. nov. 



Hemilexis subemarginata, sp. nov. 

 (PI. XVI, Fig. 4, 9.) 



9. Length, 1.4""". Polished black, impunctured; antennae and legs 

 reddish-yellow. Head subglobose, well rounded before and behind. 

 Mandibles rufous, projecting, bideutate at tips. Anteunai 13-jointed, 

 gradually thickened toward tips, the last joint large, fusiform, larger 

 than the two preceding united; tlagellar joints one to four cylindric, 

 subequal, the joints beyond to last moniliform, loosely joined. Thorax 



