244 AMERICAN HYMEXOPTERA. 



APERIL,EPTUS Foerst. 

 (Synopsis der Fain, uud Gatt. der Ichueuiuonen, 1868.) 



Body strongly shagreened. Head about the width of thorax, 

 oval in front; clypeus narrow, elliptical, oval, strongly arched ver- 

 tically ; mandibles small ; antennae long, cylindrical. Thorax elon- 

 gate, oval, tapering toward apex; parapsidal grooves wanting; 

 scutellum oval ; metathorax with only the apical transverse carina. 

 Abdomen elongate, sessile ; segments beyond the first rectangular. 

 Legs long and slender. Wings elongate ; areolet olilique, triangular, 

 sessile ; humeral cross nervure not broken. 



Mesouotura and sternum rufous tropicus n. sp. 



Mesouotum and entire thorax black peiiuria n. sp. 



Aperileptus tropicus n. sp. 



% . — 4 mm. Black, with mesothorax. except narrow stripe beneath wings and 

 scutellum, rufous; anterior orbital lines, orbital spots above, two oblique stripes 

 on face, clypeus, mouth-parts, cheeks beneath, tegulse, spot in front, long lateral 

 stripes on margins of mesonotum, posterior tibiae at base and four anterior coxae 

 and trochanters, white; remainder of legs ferruginous, hind tarsi and apex of 

 tibiffi dusky; antenuse black; wings hyaline, iridescent, nervures and stigma 

 brown ; basal segment of abdomen without carinse, faint groove at base. 



One specimen from So. California (type, coll. Amer. Ent. Soc. ). 



Aperileptus penuria n. sp. 



"Jj . — 5 mm. Black, with anterior orbital lines, orbital spots above, clypeus, 

 mouth-parts, scape beneath, cheeks beneath, tegulge, spot in front, margins of 

 mesonotum and four anterior coxfe and trochanters, white ; posterior coxse pice- 

 ous, posterior tarsi and tibiae at apex dusky, remainder of legs honey-yellow ; 

 antennae black ; wings hyaline, nervures and stigma pale brown ; basal segment 

 of abdomen with faint, narrow groove. 



One specimen from Canada (coll. Amer. Ent. Soc). , 



IVIIO.MERIS Foerster. 

 (Synopsis der Fam. und Gatt. der Ichneumonen, 1868.) 



IVIioineris nasoni n. sp. 



9. — 3 mm.; ovipositor .75 mm. Black, with scape beneath, mouth-parts, 

 tegulae, spot covering base of third and apex of second abdominal segments and 

 legs reddish yellow; posterior tibife dusky, with a paler central annulus, hind 

 tarsi also dusky ; antennae slender, black ; third segment of flagellum longest, 

 second longer than first ; scape small, cone shaped ; wings hyaline, nervures and 

 stigma brown, the latter triangular ; .space of areolet large, pentangular in outline, 

 the outer nervure wanting; head and thorax polished; parapsidal grooves pres- 

 ent : metathorax gradually sloping to apex, areolated with high carinas : abdomen 

 polished subclavate. compressed from base of third segment; petiole broadly 

 petiolate and broadly tuberculate on disc ; legs slender; tibiae constricted at base. 



One specimen from Algonquin, 111., sent by Dr. Nason, after 

 whom the species is named. Type, coll. Davis. 



