508 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxix. 



the almost uniform color of the same appendages, and the longer, 

 slenderer, and less dentate forceps. 



Size medium (for the genus); form elongate fusiform, slightly 

 depressed; surface finely punctate on the abdomen and forceps; 

 glabrous elsewhere. Head equal in width in the caudal half, gentl}' 

 rounded; antennae composed of thirteen joints, the proximal sub- 

 conic, the second small, third slightly longer than the fourth or fifth, 

 the latter two subequal, the remaining joints regu- 

 larly increasing in length, Pronotum slightly larger 

 than broad, the lateral margins very slightly expand- 

 ing caudad; caudal angles and caudal margin ro- 

 tundato-arcuate; transverse impression broad and 

 shallow, caudad of the middle, the whole caudal half 

 being lower than the cephalic half, which is slightly 

 inflated; a faint median longitudinal sulcus present. 

 Tegmina slightly more than half the length of the 

 pronotum; "shoulder" angles rounded, projecting 

 ^'^Lj^mT^xlT'' ^^^ ^^^^^^ beyond the pronotum; caudal margins 

 obliquely truncate toward the median line. Ex- 

 posed portions of the wings about two-thirds the length of the 

 pronotum, rounded, with the tips sharply truncate. Abdomen with 

 lateral plicae present on two segments, the distal of the two segments 

 with them more marked than on the other; anal segment but little 

 longer than the next segment proximad, gradually narrowed caudad, 

 bearing along the truncate caudal margin a number of distinct rasp- 

 like tubercles; subgenital plate transverse, the distal margin broadly 

 arcuate. Forceps about as long as the tegmina, parallel, moderately 

 slender, gently curved in the distal third and overlapping, the internal 

 margins crenulate. Femora distinctly though moderately inflated. 



General color, seal brown, with a very faint blue-black sheen to the 

 abdomen; caudo-lateral margins of the pronotum and exposed por- 

 tions of the wings bufl'y; the limbs are of the general color, touched 

 with claret brown. 



Measurements. 



mm. 



Length of body (excluding the forceps) 8. 2 



Length of pronotum 1.5 



Length of tegmen 2. 5 



Length of forceps 2. 6 



The t3^pe is unique. 



Genus CHELISOCHES Scudder. 



1876. Chelisoches Scudder, Proc. Boston Soc. Nat. Hist., XVIII, p. 295. 



Type. — Lobophora rufitarsis Serville. 



i 



