152 PROCEEDINGS OF THE ACADEMY OF [May, 



number, the extreme distal the larger: median and caudal femora 

 with ventral margins regularly and heavily spined, genicular spine 

 large: caudal tarsi with metatarsus distinctly longer than the re- 

 maining joints combined, ventral surface strongly biseriate, pul villi 

 small. 



General color above and on the venter of the abdomen argus brown, 

 paling to antique brown on the veins distad on the tegmina. Head 

 deep blackish fuscous, except for the mouth-parts, labrum and distal 

 half of the clypeus; eyes prout's brown; cUstal palpal joint 

 weakly washed with mummy browTi; ocelli zinc orange; antennae 

 blackish fuscous, slightly paler proximad and distad. Pronotum 

 with a relatively broad cephalic and lateral border of ochraceous- 

 buff , the bounding line of the two shades appreciably sinuate laterad. 

 Tegmina with the general color strongest at the base of the marginal 

 iield, this, in the same area, sharply giving way to ochraceous-buff, 

 which passes distad into a weak shade of the general coloration; 

 distal section of the tegmina very pale, as is the normally covered 

 section of the right tegmen. Wings weakly infuscate, becoming 

 ochraceous distad, the veins similarly but more opaquely colored. 

 Abdomen faintly darker than the general dorsal coloration, more 

 deeply infuscate laterad, the dorsal abdominal fold ochraceous-buff, 

 surrounded by deep fuscous; styles deep fuscous. Limbs ochraceous- 

 buff, coxae each with a proximal blotch of fuscous, those of the cephalic 

 coxae much smaller than those of the other limbs. 



Length of body, 7.3 mm.; length of pronotum, 2.4; greatest width 

 of pronotum, 2.9; length of tegmen, 6.4; greatest width of tegmen, 

 2.2. 



The type is unique. 

 Ischnoptera clavator n. sp. (PI. I, figs. 9-12). 



Allied to /. amazonico}^ Rehn, from northern Brazil, but differing 

 in the deeper color pattern, more inflated distal palpal joint and 

 the radically different genitalia of the male, the subgenital plate 

 ■of which bears a relatively large club-like appendage. The supra-anal 

 plate of the female of clavator is distinctly U-emarginate mesad, 

 -while that of amazonica is entire. The species shows relationship 

 to /. ruhiginosa Walker, having a similarity in the form of the male 

 .supra-anal plate, but clavator is a larger species with more convergent 

 ■eyes, a less strongly transverse pronotum, more elongate tegmina 

 and wings, and decidedly different development of the subgenital 

 plate and styles of the male. The female of rubiginosa has the 



10 Trans. Amer. Entom. Soc, XLII, p. 225, (1916). 



