a. c. DAVIS. 359 



% . — Differs in having the thorax entirely black (the scutellum varies from 

 entirely black to entirely yellow) ; the legs and face are yellow instead of rufous : 

 the basal portion of middle coxse, all except ventral portion of hind coxse and 

 upper portion of posterior femora are black ; the antennae are darker with scape 

 yellow beneath. 



One female and five males from Jiilietta, Idaho CProf. Aldriehj. 



Aiioiiialoii hHSilicon n. sp. 



9. — 15 mm.; antennfe 10 mm. Rufous, with upper half of head, except 

 pale orbital spots above, occiput, spot on upper prothorax, stripe beneath wings, 

 nieso- and metasternum, spot before scutellum, portion around scutellums. spots 

 on mesonotum, posterior coxse. basal posterior trochauter, apical half of posterior 

 tibife and dorsum of second abdominal segment, black ; face, entire scape, mouth- 

 parts, lower half of cheeks, and anterior coxfe and trochanters, yellow ; tarsi and 

 four anterior tibiie fulvous; wings large, subhyaline, nervuresand stigma brown ; 

 third discoidal cell not narrowed at base ; second recurrent and transverse median 

 nervures uniting considerably back of the transverse cubital and basal respec- 

 tively ; humeral cross-vein broken far below the middle; head subpolished, 

 strongly punctured above; face with median vertical ridge; clypeus with the 

 apex elongate and elevated ; thorax coarsely and strongly punctured ; parapsidal 

 grooves uniting before scutellum ; scutellum broad, flat and with slight median 

 longitudinal groove: metathorax reticulate, protruding but little at apex ; abdo- 

 men long, slender, strongly compressed ; postpetiole short, somewhat widened ; 

 ovipositor 3 mm. ; legs slender, with hind tibise and tarsi inflated, the latter de- 

 creasing toward apex. 



One specimen from iNIoscow, Idaho (Prof. Aldrich). 



An4>inal4»ii clavipeM n. sp. 



% . — 7 mm. ; antennae 4.5 mm. Black, with face, orbital lines (broken above), 

 scape beneath, mouth-jiarts, cheeks beneath, tegulie. long line abov'e on prothorax, 

 four anterior coxse and trochanters, apical trochauter of hind legs and base of 

 basal trochanter, lemon-yellow ; abdomen black, with segments 3-5 rufous, dusky 

 on the dorsum, four anterior legs pale rufous; posterior legs with the coxse, basal 

 trochanter, base and apex of the femora, apical third of tibia? and tarsi, except 

 basal segment, black ; hind tibiee yellowish at base and with a dusky band mar- 

 gining this; remainder of hind legs dark rufous; anteniue black ; wings hyaline, 

 nervures and stigma brown ; third discoidal cell narrowed to a point at base so 

 that the cubital and transverse discoidal nervures unite as one ; the cubital ner- 

 vure between the second recurrent and transverse cubital nervure is longer than 

 the latter and broken at juncture with second recurrent; transverse median 

 nervure unites considerably back of basal ; head punctured, face polished, sj«arsely 

 ])un(^tured, clypeus not separated, pointed ; thorax rugosely punctuied, metathorax 

 flat and strongly I'eticulate; jiarapsidal grooves indistinct; upper pleurae longi- 

 tudinally rugose ; abdomen slender, strongly compressed beyond second segment : 

 first two segments cylindrical, straight ; spiracles on first segment tuberculate. 

 but the postpetiole is not widened ; legs slender; hind femora short, curved near 

 apex and incrassate, not half again as long as the basal trochanter, which is much 

 longer than the second ; hind tibia- very slender at base, but very large and thick 

 toward apex ; tibial sjinrs small ; basal segment of hind tarsi large and as long as 

 the femora. 



One specimen from Agrieiiltnral College, Michigan, May 25th. 



TRANS. AM. ENT. SOC. XXIV. ")Et'EMriKR, IHI*?. 



