16 E. T. CRESSON. 



28. Ichneumon gracilentus, n. sp. 



$ . — Head black; orbits, cheeks, face, clypens. mouth and annulus 

 on antennas, white ; pro- and uiesothorax black, margins of the former, 

 interrupted above, tegulae and scutellums, whitish ; metathorax whit- 

 ish, a broad stripe on each side of middle and a bilobed mark at tip. 

 black ; pleura entirely whitish ; wings hyaline, iridescent, nervures and 

 stigma brownish ; legs luteous, spot at tip of posterior cox^e above, line on 

 femora above, on tibiae behind, and tips of tarsi, fuscous ; abdomen 

 above black, with a slight opaline iridescence, extreme base of first 

 segment, lateral and apical margins of all the segments above, broader 

 laterally, and the venter entirely, whitish. Form elongate, slender, sur- 

 face smooth and polished, impunctured; head broad, clypens deeply 

 impressed about foveas; scuteilum flat ; metathorax truncate behind 

 elevated Hues sharply defined, lateral tubercles short and acute ; areo- 

 let of wing broad, 5-angular ; abdomen smooth and polished, slender 

 at base. Length 4 lines. 



One 9 specimen. 



29. Ichneumon Arista, n. sp. 



% . — Difi"ers from tenebricus only as follows : orbits interrupted on 

 both sides near the summit of eyes, so that only a spot remains at the 

 summit; mesothorax with two short white lines on the posterior mid- 

 dle ; scuteilum slightly raised on the sides, black with a U-shaped yel- 

 low or white mark posteriorly ; the metathorax has a short, slender, 

 black line on the flanks at base; wings tinged with yellowish, faintly 

 dusky along apical margin ; posterior tibia) and base of their tarsi 

 black, rest of their tarsi white, claws black ; posterior femora luteous 

 beneath ; abdominal segments with narrower whitish apical margins, 

 the first segment white at base. Length Ti — 8 lines. 



Five S specimens. 



30. Ichneumon maritus, n. sp. 



% 9 . — Smaller than Arista, and differs by the orbits being only 

 once interrupted at the summit of the eyes ; by the legs, 9 j being 

 luteous, the femora behind more or less, and the base of the tibiae, be- 

 ing black or dusky ; the posterior tarsi are white, with the basal two- 

 thirds of the first joint, and the claws, black ; in one 9 specimen the 

 posterior coxse are irregularly black above and their femora have a 

 black line above, their tibi<e pale fulvous except a black spot at extreme 

 base, their tarsi whitish, fulvous at base, claws black. The % has the 

 posterior tibia) entirely luteo-fulvous, their tarsi whitish, tinged with 



