390 



3- Alidomen distinctly petiolate. the lirsi tcrgitc subcylindrical, hind 



femora simple, not toothed 2.Spathius perdebilis Perkins 



Abdomen with the first tergite flattened, but little narrower than 

 the third liind femora incrassate and toothed beneath. 



3. Euscclinus percgriinis Perkins 



4. First tergite about one and one half times as broad as long, ab- 



domen oval, hind wings of male with pseudostigma. 



4. Hcterospilus prosnpidis Viereck 

 First tergite not broader than long, abdomen more elongate, 

 hind wings without a pseudostigma 5 



5. Subdiscoidal nervure continuing in the same line with the dis- 



coidal, abdomen with transverse row of crenulate sulci on tergites 



3-5 5. Horniiopterns z-agrans n. sp. 



Subdiscoidal nervure arising from the interbrachial nervure, ab- 

 domen without transverse row of crenulate sulci except on tergite 

 three 6 



6. Female and male pale testaceous, thorax and abdomen often 



much infuscate but the parapsidal furrows always pale, third 

 tergite without a crenulate furrow. 



6. Iscliiogoniis palliatiis (Blackburn) 

 Female with the head pale, tliorax and abdomen black, male 

 pale testaceous, third tergite with a crenulate furrow. 



7. Ischiogoiiiis pallidiccps Perkins 



28. A Xkw I:\tMrouA.\T H()i;.Mi(>rTF;Rrs. 



Hormiopterus vagrans n. sp. 



Female: Head brownisli-ycllow, eyes black, mandibles and antennae 

 infuscate toward apex ; thorax and abdomen dull reddish brown, pro- 

 podeum and first tergite black, tlie other tergites more or less dark 

 on the disk; legs pale testaceous, the tarsi a little infuscate at apex; 

 ovipositor sheaths black apically, jialer at l)ase ; wings subhyaline, 

 iridescent, the nervures blackish, paler apically, stigma and costa ex- 

 cept at apex pale testaceous. 



Antennae about 35-jointed, about as long as the entire body, all 

 the joints longer than liroad, first fiagellar joint a little longer than 

 the second ; face thinly hirsute, finely granular, with shallow indefinite 

 punctures; eyes rounded, exceedingly slightly emarginate opposite the 

 antennae, malar space broad ; genae a little broader below ; ocelli in a 

 very small triangle, separated from each other by but little more than 

 the diameter of one, much nearer tn eacii otlicr than to tlie eye mar- 

 gin; front, vertex, and occiput minutely tessellate ; occiput and vertex 

 with the hairs directed forward. 



Mesonotum roughly tessellate or granular, hirsute, the parapsidal 

 furrows converging behind and meeting at about two-thirds of the dis- 

 tance to the scutellum and continued to it in a broad shallow rugulose 



