MORGAN HEBARD 177 



laterad with longer erect hairs. Tegmina proximad opaque and thickly 

 supplied with similar hairs bounded by a nearly straight, oblique line from 

 apex of anal field to distal portion of costal margin; remaining portion delicate, 

 suffused hyaline. Wings delicate, hyalinC; with two elongate, adjacent, 

 translucent stigmata at costal margin. Cerci with (seven) strongly defined 

 rounded joints, none much longer than broad, tapering to acute apex. Supra- 

 anal plate delicate, sub-bilobate in caudal outline. Subgenital plate some- 

 what asymmetrical, bilobate, with two very small, simple, straight, elongate, 

 cylindrical styles. Limb armament, j)ulvini and arolia as characteristic of 

 the genus. 



Allotype. — 9 ; same data as type. [Hebard Collection.] 



Agrees with male except as follows. Size larger, form broader, with t(>g- 

 mina and wings extending to apex of abdomen. Ocelli elliptical. Supra-anal 

 plate more chitinous, half as long as width between cereal bases, produced 

 between these and broadly rounding to the broadly transverse distal portion. 

 Subgenital plate valvular, as characteristic of the genus. 



The coloration of this species, as in other forms of the genus, affords the 

 specific diagnostic characters of greatest importance. Male. Head blackish 

 brown, mouthparts paler. Antennae blackish brown, with a buffy annulus 

 distad, which occupies three to four joints. Underparts and limbs blackish 

 brown, the latter with trochanters and joints paler, spines ochraceous-tawny. 

 Pronotum black with a weak metallic bluish sheen, proximo-lateral portions 

 narrowly ochraceous-tawny (in a male paratype this extends to the latero- 

 caudal angles). Tegmina in proximal portions black with a metallic bluish 

 sheen (but when held to light translucent prout's brown); in distal portions 

 transparent, evenly suffused with jirout's brown. Wings with stigmata 

 translucent prout's brown, remaining portions hyaline, very faintly washed 

 with prout's brown, excejit distal portion of anterior field and peripheral 

 margin of radiate field where they are suffused with this color. Dorsal 

 surface of abdomen and cerci shuiing blackish brown. 



Female. Differing from the male in color only as follows. Antennae with a 

 l)uffy anmdus occupying six or seven joints. Ochraceous-tawny lateral portions 

 of pronotum extending to near the latero-raudal angles, in one recessive speci- 

 men more orange in shade, including these angles and leaving only the meso- 

 caudal third of the pronotum black. Tegmina with m(>tallic bluish sliecn of 

 proximal portions more pronoimced. 



Measiu'cinctits {in millimctera) 



Length of Lengtli of Widtli of Length of Width of 



-, body pronotum pronotum tognien togmon 



O 



Type ."i.S IS 2.2 4.9 2 



Paratype G • l.S 2.1 4.9 2 



9 



Allotype 7.2 2.2 2.8 5.8 2.7 



Paratypes {Z) G-6.4 1.9-2 2.2-2.9 5.3-5.8 2.2-2.7 



In addition to the dcscril)ed ])aii', we have l)efore us one male 

 and three female paratypes, beariuj;' llic same tlata. 



TKANS. AM. ENT. SOC, XLVIII. 



