JAMES A. G. REHN 255 



of the cerci; between these impressions the plate is moderately rectangulate 

 produced and bears distad the styles, which are elongate, heavy, compressed, 

 dagger-like structures, broad at their bases and tapering to the bluntlj^ rounded 

 apices, the styles are symmetrical and reach to about the distal third of the 

 cerci. Femora unarmed beneath, margins only haired but the usual distal 

 ventral spine large; dorsal genicular spines present on cephalic and median 

 femora, caudal femora lacking: arolia present. 



General color of the head, disk of the pronotum, and anal and discoidal and 

 juxta-discoidal section of the scapular fields of the tegmina ochraceous-orange; 

 lateral portions of pronotum and remainder of tegmina hyaline; the abdomen 

 as a whole apricot yellow. Head with the face more orange-buff than the 

 occiput, which is of the general color; at the narrowest point of the interocular 

 space is situated a transverse bar of dull cream-white, which broadens laterad 

 and there encloses a minute point of brownish; eyes blackish fuscous mottled 

 with umber. Pronotum with the disk bearing a median pair of e'ongate 

 comma-shaped whitish lines. Tegmina with the veins finely pencilled with 

 milky white. Wings washed with pale ochraceous-orange, more strongly so 

 distad. Abdomen tending toward ochraceous-orange laterad and ochraceous 

 tawny distad. Limbs dull warm buff. 



Length of body, 9.7 mm.; length of pronotum, 2.5; greatest width of pronotum 

 3.6; length of tegmen, 10.5; greatest wddth of tegmen, 3.3. 



The type of this really beautiful species is unique. 

 Chorisoneura albonervosa new species (Plate XIV, figs. 21 and 22.) 



Apparently allied to C. caJogramma Walker, differing in the 

 veins of the discoidal field being nearly longitudinal and in 

 numerous features of the coloration; i. e. of the head, pronotal 

 disk, absence of humeral streak, etc. 



Type.— a" ; Parc4, State of Para, Brazil. (C. F. Baker.) [Acad. 

 Nat. Sci. Phila., Type no. 5265.] 



Size medium (for the genus): form elliptico-ovoid; moderately depressed: 

 surface polished. Head with its entire width visible cephalad of the pronotum 

 when seen from the dorsum, the occiput truncate, the eyes regularly rounded; 

 interocular space faintly broader than the depth of the eye: eyes reniform in 

 basal outline, subequal in depth the greater portion of their length, shortly 

 narrowing caudad: antennae slightly surpassing the body in length, pro.ximal 

 joint but faintly shorter than the ocular interspace; second joint nearly half as 

 long as the proximal one; third joint subequal to the second; foiu-th and suc- 

 ceeding joints very short, moniliform: palpi with the third joint eloiigate, quite 

 slender; fourth joint shorter than the third, regularly enlarging distad, fifth 

 joint subecjual in length to the third, relatively roljust, of the form usual in 

 the group, with the greater width at the distal third, thence regularly narrowing 

 distad. Pronotum of the same shape as in C. lata but slightly less strongly 

 transverse; sin-face contour identical with that of lata except for lacking the 

 medio-longitudinal impression. Tegmina lanceolate, moderately acuminate, 

 greatest width (at proximal third) contained slightly more than tlu-ee times 



TRANS. AM. ENT. SOC, XLII. 



