March, 1916] Ilomopteroiis Studies. Part I 175 



Genus Philaenus Stal. 



Head angular, anterior margin of lobes of vertex obtuse, 

 sulcate; apex of clypeus a little produced; rostrum two-jointed, 

 reaching beyond the middle coxae. Elytra oblong in general 

 outline, the side margins subparallel, with the apices rounded. 



This genus is widely distributed. In his work on the 

 Transvaal forms. Distant includes Philaenus under Ptyelus. 



Philaenus caffer Stal. 



Ptyelus caffer, Stal Ofv. Vet. Ak. Forh. 250. (185.5). 



id. Eug. Resa. Hem. 287. (1858). 

 Ptyelus caffer, Dist. Ins. Transv. IX. 221. (1908). 

 Philaenus caffer, Hem. Afr. 78. IV. (1866). 



General color varies, usually a grayish straw or yellowish. 



Length 5-5.5 mm. Breadth 2 mm. 



Vertex produced, rounded at apex, the disc fiat, densely pubescent, 

 the length longer than half the distance between the eyes and equal to 

 about more than one-third of the width across the eyes. Frons swollen, 

 convex, a little wider at the base than next the vertex, the sides sub- 

 parallel, about twice as long as the width next clypeus; the latter is 

 roughly triangular in shape, and sharply produced; lorae almost as wide 

 as the clypeus, gense angular; point of insertion of the antennae dark 

 brown; tip of rostrtmi black. Pronotum lighter in color than the head, 

 covered with a grayish pubescence, with four blackish spots on the 

 anterior half, two rather distinct, alongside the median line, and the 

 other two indistinct, near the lateral margins. These spots, however 

 vary in different fomis. Anterior margin broadly rounded between 

 the eyes; length a little longer than the vertex and longer than half the 

 width of pronotum. Surface of pronotum finely punctate. Scutellum 

 a little more than half the length of the pronotum. Elytra lighter than 

 rest of the body, the veins distinct, showing as brown ridges, six apical 

 cells, and three anteapicals, the middle cell of the latter shorter than 

 the other two; apices rounded, a little narrower than on middle. 

 Abdomen above brownish, beneath brownish black, in some cases pure 

 black. Legs light yellowish. Genitalia — female; last ventral segment 

 rather short, pygofers oval, broad, not as long as ovipositor. Male 

 ultimate ventral segment twice as long as the penultimate, the posterior 

 margin concave, plates a little longer than last segment. 



Described from four males and one female. 

 Habitat: Cape Colony (Stal), Cape Province (Distant), 

 Darling, C. P., (Mally). 



Philaenus hottentoti n. sp. 



General color yellowish brown, form similar to P. caffer 



Stal, but a little stouter. Length 6 mm. Width 2 mm. 



Head yellowish, broad; vertex angularly rounded, two black spots on 

 the anterior margin, located on the middle close to one another; posterior 



