452 Materials for a Monograph 



of head and prothorax, narrowed in front, extending to tip 

 of tubercle of vertex; wings very nearly of the same 

 length as the wing-covers, both shorter than body, as in 

 X. brevipennis ; ovipositor very long, exceeding the length 

 of the hindmost femora, of a brown color, deepest toward 

 apex. 



Length of body, .55 in. ; of wing-covers, .30 in. ; of hind 

 femora, .48 in. ; of ovipositor, .6 in. 29. 



Lawn Ridge, Illinois, (Mus. Comp. Zool.) 



ORCHELIMUM, SERVILLE. 



* 1. O. VULGARE, Harr., Report, 3d ed. ; 162. Fig. 77. 



(1862.) 



Pterophylla agilis, Harr., Cat. Ins. Mass. ; 56. (1835.) 

 Mass., (H. Coll., Sanborn, S. H. S.) Cape Cod, (S. H. 

 S.) Conn., (Norton.) 



* 2. O. CONCINNUM, nov. sp. 



$ Brownish green ; a dark reddish brown dorsal streak 

 upon the head and prothorax, becoming faint towards the 

 hind border of prothorax, and narrowing anteriorly to the 

 width of the tubercle of the vertex, passing over this down 

 the front to the labrum, expanding broadly in the middle 

 of the face ; legs brownish green, tarsi dark brown, spines 

 of tibiae tipped with black ; abdominal appendages reddish 

 brown ; wing-covers pellucid, veins grass-green, except 

 the heavy transverse vein of the sonorous apparatus, which 

 is brown; wings pale brownish green, extending a little 

 beyond wing-covers ; 9 having the same markings as the 

 $ except that all the nervures of the wing-covers are 

 brown, and the wings are more dusky, and are shorter 

 than the wing-covers; ovipositor reddish brown, a little 

 curved and very pointed; a much slenderer and more 

 graceful form than O. vulgare. 



Length of body, .7 in. ; of wing-covers, .84 in. ; of wings 

 beyond wing-covers, .08 in. ; of hind femora, .6 in. ; of 

 ovipositor, .32 in. 1 <J, 2 9. 



