OREOCOSSUS; ZEUZEROPECTEN. By M. Gaede. 
547 
X. obscurascens n. sp. (79 h). Browner than atriplaga. Dents proceed from the black base of the costal obscurus- 
margin, as in steniptera, besides the spot behind the middle of the costal margin is deep dark. Less intense 
spots below vein 3. Hindwing in the distal area with distinct reticular lines. 54 mm. Central Abyssinia. 
Type in the Tring Museum. — obsoleta /. n. (79 g) forms the transition to the following species. Of the basal obsolete.. 
spot only the terminal point and the dents are distinct. The median spot is wedge-shaped. A large faded spot 
below the cell-end and 2 below it at the inner margin are scarcely recognizable. Hindwing finely latticed. 
Ground-colour in both wings lighter than in obscurascens. 42 mm. White Nile, 12° N. Lat. Type in the 
Tring Museum. 
X. squameus Dist. (79 g) is greyish-brown. Forewing with a reddish-brown basal stripe. The median squameus. 
spot often like a stripe, besides marked darker with feeble bands. Hindwing pale greyish-brown. 38—58 mm. 
Gold Coast, East Africa, Transvaal. 
X. steniptera Hmps. (79 g) is more intensely marked, ground-colour lighter. Mesothorax reddish-brown, steniptera. 
The central spot as far as the lower cell-angle quadrangularly prolonged, touching a triangular spot below the 
cell-end. Hindwing white. 28—38 mm. Somaliland. 
X. grandiplaga n. sp. (79 h). Mesothorax blackish brown. The pale transverse bands similar as in grandiplaga. 
squameus. Spots only above the middle of vein 1 b, and a large one before the margin above vein 5. Hindwing 
lighter, in the type densely latticed pale brown. $ 35—45 mm. Cameroon (type), Tchari-Tchad. Type in the 
Berlin Museum. 
X. simillima Hmps. (79 h). Body reddish-brown, thorax darker. Forewing greyish-brown. The interior simillima. 
median area from the costal margin to vein 1, the space behind the cell to vein 3, and some marginal spots 
whiter. Below the cell in the light area black dots, one at the base of vein 2 being stronger. Before the margin 
dark angular spots. Hindwing brownish-white. 25—28 mm. Somaliland, Abyssinia. 
X. pindarus Faioc. (79 h). Reddish-brown. The basal stripe at the costal margin normal. Right below pindarus. 
the median vein a deep black streak as far as below vein 2, where we notice a large square spot as far as 
vein 1. The area below the streak is white, striated black. The median spot at the costal margin is paler and 
prolonged to vein 2. Hindwing white with a brownish margin. 40—44 mm. East Africa. 
X. biatra Hmps. Body greyish-brown. Fore wing white with numerous black strokes. Costal margin biatra. 
and inner margin brownish except at the base. In the submedian fold large black scales. At the costal margin 
a large black spot before the middle, and a triangular one behind the middle, between them smaller ones. 
Hindwing white, in the distal area densely stroked black. 50—65 mm. Gold Coast, Niger District. 
X. tristis. The form mesosticta Hmps. (79 h) has a brownish-white body. Mesothorax blackish-brown, tristis. 
Wings white. Forewing at the costal margin narrowly brownish. Of the same colour a large spot before the mesos tu'ta. 
middle of the inner margin and, beginning from the cross-vein, the whole distal area. At the lower cell-angle 
and below vein 2 black spots. Hindwing white. $ 28 — 38 mm. Somaliland. tristis Gaede. Body and wings tristis. 
intensely blackish-brown. Light is only the distal portion of the cell. Submedian fold almost black, the dots 
below the cell as in mesosticta. Hindwing only in the basal area light. $ 45 mm. South West Africa. 
13. Genus: Oreocossus Aur. 
In the neuration similar to Xyleutes, but both wings shorter. In the fore wing veins 7, 8 and 9 from 
the apex of the inserted cell, vein 11 also proceeding from it. Distinguished by the antennae being pectinate 
as far as % and also shortly pectinate in the §. 
0. kilimanjarensis Hall. (79 h). Light reddish-brown with a dark red-brown marking. The median kiliman- 
band is very oblique, inside almost straightly defined, above the inner margin with a light spot in the middle. jarensis. 
Before the distal margin a narrower, somewhat interrupted band. Hindwing paler with traces of a band before 
the distal margin. <$ 40—50 mm. East Africa. — occidental^ Strd. (79 h) shows also the base of the forewing occidentalis. 
as dark as the median band, so that only a narrow stripe of the ground-colour remains, which often does not 
extend to the inner margin. The spot of the median band is of a purer white in the d, in the $ less distinct. 
The marginal band is entire, more distinct. 38—56 mm. Spanish-Guinea, Nyassa District, East Africa. 
14. Genus: Zeiizeropecten n. g. 
Antenna of d in the basal part pectinate as in Oreocossus, but the rest also with short pectinations. 
Shape of wings broader. In the forewing veins 4 and 5 close together, 6 already from the inserted cell. 7 -f 8 
on a long stalk, and 9 on a short stalk with both of them, 10 from its anterior edge near the stalk of 9 + 7 + 8, 
and 11 from the end of the inserted cell. Hindwing as in Oreocossus, but vein 6 nearer to 5 than to 7. Type: 
lactescens n. sp. 
