AFRICAN NEUROPTKP.A. 168 



placed; iiitt^rtiMl branch rather sleiirler, apex slightly hooked and directed out- 

 wards: external branch twice as thick, apex rounded. Genital lobe broad, apex 

 rounded. Internal haniular branch projecting slightly farther than anterior 

 lamina or genital lobe. 



9-— Sides of 8th abdominal segment dilated (as much as in Lib. quadrupla 

 Say). Vulvar lamina not produced beyond apex of 8, margin entire, but bent 

 towards the abdomen at the middle. 



Sixteen males, two females, Zanzibar and Kilimanjaro, Dr. Abbott. 

 One male. Cape Town, U. S. E. E. 



Orlhetriini cairriiin Burm. — Lib. cnffra Burm. Handb. Eut, ii. p. 856, is 

 undoubtedly an Orthetrnm. 



One male, Congo, one female, Freetown, Sierra Leone, U. S. E. E. 

 They were seen by Dr. Hagen, who kindly identified them for me. 

 Both are imjierfeet. 



4lrtlietruiii Wrightii Selys. 



LibeUnJa Wriyhtii Selys, Ann. Soc. Ent. Belg. xii, p. 9(5. 1869. 



%. — Genitalia of 2 rather prominent, black. Anterior lamina longer than 

 any other piece, its apex rounded, barely notched ; viewed from the side it is 

 ((uite slender. Hamule with apex bifid, branches approximately of equal length 

 when viewed from the side; internal (anterior) branch slender, with a very 

 acute apex directed outwards; external (posterior) branch much broader, some- 

 what lamellar, apex broad, truncate, angles rounded. Genital lobe rather broad, 

 rounded, projecting equally with the internal hamular branch. 



9. — Sides of 8tb abdominal segment dilated. Vulvar lamina not prolonged 

 beyond the apex of 8, its margin entire, not bent in the middle as in brachinle. 



One male, one female, Seychelles, Dr. W. L. Abbott. 



!l$ohizoiiy.\ liietif'era Selys. 



Zygonyx ? luctifera Selys, Ann. Soc. Ent. Belg. xii, p. 96, 1869. 



Schisonyx luctifera Karsch, Berl. Ent. Zeit. xxxiii, p. 281, 1890; Selys. Ann. 

 Soc. Ent. Belg. xxxv, p. ccxxvi, 1891. 

 % . — Genitalia of 2 not prominent. Anterior lamina rather flat, a small tu- 

 bercle and a depression each side, apex rounded, entire. Hamule projecting 

 farthest, its apex bifid so that the anterior branch forms a di.stinct, rounded, and 

 somewhat slender hook; posterior (external) branch not developed. Genital 

 lobe rather narrow, not projecting as far as lamina or hamule. Wings hyaline, 

 reticulation blackish. Pterostigma dark brown, trapezoidal. Sectors of the 

 arculus distinctly stalked, no hyiiertrigonals, one median cross-vein, discoidal tri- 

 angles free, that of the front wings i>laced a short distance (1.5 mm.) beyond the 

 apex of that of hind wings, nodal sector distinctly waved beyond the middle. 

 Front wings with 10 — 11 antecubitals, the last one not continuous, 9 — 10 post- 

 cubitals, iriternal triangle of one or two cells hardly distinct from adjacent cells, 

 two or three posttriangnlar cells, then two rows. Hind wings with 6 -7 ante- 

 cubitals, 11 — 12 postcubitals. no internal triangle, two or three posttriangnlar 

 rows, sectors of the triangle united at their origin. Posterior lobe of prothorax 

 very small, its hind margin entire, rounded. 



.\bdomen (incl. app.) 3.3 mm. Hind wing 37 mm. 



TK.\NS. AM. KNT. SOC. XIX. JUNE, 1892. 



