MONOGRAPH OF THK NORTH AMERICAN PROCTOTRYPID.E. 2fi7 



1, 1, (listiiM't, the tarsi w joiiit«'«l, longer th.ni tlie til>i{v, tlic ba.sal Jt)int 

 of liiiul tarsi tliiee tiiiieK as lon^ as tlic second. 



As here detined, this genus ia divisible into two seetions by the 

 slnipe ol" the scutelhini; in one section the siutelhini is trianjjfiihir, not 

 produced into a h>n;j acute spine; in the other tin* sJuteUnin is pro-, 

 duced into a long- acute spine projectinj; tar over the nielanotum, iind 

 it seems to couii)rise sjK'eies that by some authors are included in the 

 jrenus Lcptacix. But LeptaciH, as understood by nu', is (piiteditlcrent, 

 the scutellum beingf produced into a short curved spine or tubercle, and, 

 as detined in this work, agrees more nearly with the ^i uus Cvrutavin 

 Thomson. 



TABLE OF SPECIES. 

 KKMAI.ES. 



Scutellum not or faintly pubescent, the apex produced into .in .acute spine 2 



Scutellum covered with a short dense pubesceuce. apex not i)roduced into nu 



acute Hjdue, triangular. 



Legs brown, trochanters, base of tibi.i-, and tarsi honey-yellow; antennie dark 



brown, wings with a short fringe. 



A. ocriDKNTALis, sp. nov. 



Legs brownish yellow; .antennie dark brown, scape pale beneath at base; 



wings with a long fringe A.CALiFoitNici'S, sp. nov. 



Legs and antenna' pale yellow, the flagellnm brown ; wings with a short fringe ; 



petiole i»ale A. pi.tiolatis, sp. nov. 



2. Spine of scntellum long, extending far over the metathorax, yellow; wings with 



long cilia-. 



Legs reddish-yellow, tips of posterior femora and tibia> brown; tibial spurs 



sliort ; petiole black, pube.scent A. americanI's Ashni. 



Legs uuifonuly reddish-yellow or yellow; legs not especially lengthened, the 

 hind t<arsi shorter than their tibi.p. 

 Head highly jtolished; middle and posterior tibial spurs bei»"» long; the 



petiole yellow, pubescent A. MINLTUS, sp. nov. 



Head rngiUose, opa<iue; middle and posterior tibial spurs very short, scarcely 



developed ; petiole black, pubescent A. RVCf ickps, sp. nov. 



Head highly polished; femora and tibia; brown or fuscous; the legs length- 

 ened, the hind tarsi longer than their tibite ; petiole black, pubescent. 



A. i.oNGiPEs Ashni. 



MALES. 



Scutellum scarcely pubescent, produced into an acute spine 2 



Scutellum covered witii a short, dense pubescence, the apex not acutely pro- 

 duced. 

 Legs pale, brownish-yellow ; the flagellnni d.ark brown. 



A. CALIFORNICIT.S, sp. noV. 



2. Antenna? and legs honey-yellow or reddish-yellow. 



Club joints not much longer than wide A. MiNi'Trs, ap. nov. 



Club joints five or six times hmger than wide A. longipes Ashni. 



Tips of posterior femora and tibise fuscous; club joints about five times as long 

 as wide A. americanls. 



Atnblyaspis occidentalis, sp. nov. 

 9. Length, CS™"". Polished black, irapunctured; antennpe brown- 

 black, the scape pale at base; legs brownish, trochanters, base of tibiae 



