56 [January 



tinged with pale yellow ; metathorax tinged with piceous. with a well 

 defined, transverse carina near the base and a longitudinal one on each 

 side ; before the transverse basal carina the surface is almost smooth, 

 behind, it is somewhat transversely rugose, and slightly excavated down 

 the middle. Wings hyaline, faintly iridescent ; nervures and stigma 

 yellowish ; first submarginal cell with a rather large, subtriangular, 

 membraneous spot beyond the middle, and towards the tip of the cell 

 two membraneous lines, the middle one is short and longitudinal, and 

 the apical one transverse, rather oblique, pointing inwards, and some- 

 times subobsoletely curved around to the tip of the large subtriangular 

 spot. Legs obscure yellowish, tips of the tarsi more or less dusky. 

 Abdomen shining, with the two basal segments linear, about equal in 

 length and slightly dilated towards the tip, remaining segments gradually 

 broader and compressed ; all the segments more or less stained with 

 dusky. Length 12 lines; expanse of wings 18 lines. 



Collection. — Ent. Soc. Philad. Two specimens. 

 This species is easily distinguished from the three following by its 

 large size, and by the three blackish stripes on the mesothorax. 



Ophion concolor. n. sp. 



Pale fulvous; the head, pleura, and scutellum, more or less tinged with yel- 

 low; wings hyaline, iridescent; 1st submarginal cell with a rather large, sub- 

 triangular, membraneous spot, and a little beyond it a minute, subobsolete spot. 



Uniform pale fulvous, shining; head sometimes yellowish; antennae 

 longer than the body, uniform pale fulvous ; mesothorax sometimes 

 with faint, narrow, pale, longitudinal lines ; pleura sometimes subobso- 

 letely spotted with yellow, and the scutellum always more or less tinged 

 with yellow ; metathorax finely rugose, with a well defined transverse 

 carina near the base, between which the surface is smooth and shining. 

 Wings hyaline, iridescent ; nervures and stigma pale fulvous ; first 

 submarginal cell with two membraneous spots, the inner one rather 

 large and subtriangular, its lower point prolonged, the apical spot very 

 small, sometimes slightly longitudinal, subobsolete. Legs uniformly 

 pale fulvous. Abdomen shiniug, with the two basal segments linear, 

 about equal in length and slightly dilated towards the tip. the second 

 segment stouter than the first ; remaining segments gradually broader 

 and compressed. Length 9 lines; expanse of wings 13 lines. 



Collection. — Ent. Soc. Philad. Four specimens. 

 This is the second largest species, and is distinguished from the oth- 

 ers, by being uniformly pale fulvous, and not varied with dusky. 



