JAMES A. G. REHN AND MORGAN HEBARD 257 



minute spine on caudal lobe of median femora in the series, and in one para- 

 type with an even smaller spine on a cephalic lobe of the cephalic femora). 

 Cephalic tibiae with dorsal surface armed with three spines along the caudal 

 margin.-^ Caudal tibiae with distal spurs as described for inijo, except that 

 they are not as elongate, the longest more generally curved. Plantula alwut 

 one-third as long as metatarsus. 



General coloration sayal brown.-^ Head uniformly of this color, micros- 

 copically mottled with blackish, except for a broad postocular band of black 

 on each side. Pronotum with disk uniform warm sepia, margined laterad'-' 

 with blackj^" which dark area expands caudad and fills the entire area of the 

 produced portion of the lateral lobes to the convex callosities, which are 

 white.-' Tegmina ochraceous-buff, the portion proximad of the tympanum 

 tinged with blackish. Dorsal surface of abdomen verona brown, deepen- 

 ing through warm sepia to chestnut brown, the darker areas represented by a 

 broadly V-shaped marking mesad on each segment and lateral suffusions, the 

 internal margins of which are oblique. Limbs sayal brown. Cephalic and 

 median femora with a broad black area dorsad near the distal extremity. 

 Cephalic tibia darkened in foraminal area. Caudal femora with a black 

 area, twice as long as broad, dorso-proximad, and a black band of equal width 

 running on the iimer face from the median section of the enlarged portion 

 to the extremity of that portion, where it curves dorsad, running over the 

 dorsal face and half way down the external face.^ 



In the immature example the dark caudal femoral markings are confined 

 to the dorso-proxinial section, and a broad suffused blac-kish longitudinal 

 band on the external face below the median line. 



The measurements of the type are given first, followed by the extremes 

 found in three paratypic males. Length of body, 19.5 mm., 13.7 to 17; length 

 of pronotum, 4.4, 3.9 to 4.2; greatest width of pronotal disk, 3.2, 2.9-3.1; total 

 width of pronotum, 4.3, 3.9 to 4.1; exposed length of tegmen, 4.4, 3.6 to 3.9; 

 length of caudal femur, 14.7, 12.2 to 14 mra. 



'^^ In the type and the immature example at hand the median spine is missing 

 on one of these margins. 

 ^'' Individually varying to warm sepia. 



^^ This shows the discal area to be of the same shape as in Idionoius hruinifus 

 Scudder, in which species the discal area is defined by lateral carinae through- 

 out. 



-^ Individually varying from a narrow line proximad to a suffusion covering 

 half of the lateral lobes. 



-" Indi\'idually varying to warm sei^ia. 



"^ In some specimens thence extending proximad on the external face as 

 two suffused black lines. 



TRANS. AM. ENT. SOC, XLVI. 



