o 
XANTHOSPILOPTERYX. By Dr. K. Jordan. 
a) A1) cl o ni e n at the sides and beneath black, with very distinct white 
spots; upper surface of the d', with the exception of the apex, yellow, of the 
9 black with yellow transverse bands, the last but one segment with a white 
t r a n s V e r s e b a n d. 
poggei. X. poggei Dew. ($ = falkensteini Dew.) (1 b). Distinguished from the other species by the white sub¬ 
marginal spots on the forewings. Sexes unlike one another. : Abdomen yellow above, only the terminal seg¬ 
ment black, underneath black, spotted with white; forewings with a black discocellular band, which may 
be cpiite short or reach from the costal margin to the anal angle. $: Abdomen black, ringed with yellow above, 
with white beneath; forewings from the base to the black distal margin without any markings or with only 
a fine black discocellular streak. Many $$ have a small black discal spot, corresponding to the first black 
transverse band distinguishing the folloAving species. — From Cameroon to Uganda and North Angola. 
The $ is an exact copy of Helcita (a Hypsid) and of Aletis (a Geometrid). 
catori. X. catori Jord. (1 a, (J and 9 , the $ wrongly named ochracea). Sexes unlike one another. Abdomen of 
and $ as in the corresponding sex of A", poggei. Forewing of with the large triangular basal area, 
a median and a subapical band yellow, the two former completely separated or united posteriorly; before 
the anal angle a small yellow spot; hindwings red, with black border, fringe spotted with black, as in X. poggei. 
The $ has the basal area united with the median band, enclosing on the forewing two black spots and a 
short band; the suba])ical band either entirely isolated or confluescent with the large area behind; hindAvings 
reddish-orange. — Sierra Leone. 
limho- X. limboniaculataS'bTZ. (= discosticta//wps.) (2 b). (5': Abdomen yellow above, at the sides and beneath 
maeulata. piack, spotted Avith Avhite. ForeAvings Avith a triangular basal area, two uninterrupted bands and a submar¬ 
ginal roAv of spots, all yelloAv. HindAvings rufous. — German East-Africa and Rhodesia. 
b) Abdomen y e 1 1 o av or black, occasionally whitish beneath, av i t h o u t 
any transverse bands above, at the most av i t h a median row of spots. 
hypercom- X. hypercompoides Btlr. (2b). Both sexes have the abdomen black, in the $ tipped Avith yelloAv; both 
poides. sexes Avith three roAvs of Avhite spots beneath. Forewings marked most characteristically (see our figure), espe¬ 
cially Avith regard to the second, longitudinal portion of the subapical band. HindAvings orange or red, with the 
terminal border very narrow from the middle. — RuAvenzori and Uganda. 
elongata. X. elongata Bart. (2 a). A abdomen black, spotted with white beneath; forewings marked very much as 
in hypercompoides , but Avith the subapical band not interrupted and with its last spot before the upper median 
nervule small, not projecting toAvards the termen. On the hindAvings the terminal border narroAver than in the 
preceding species. — German East-Africa; North Nyassa-Land. 
X. zenkeri. A most variable species, Avith the abdomen varying from yelloAV to black, unicolorous 
above in both sexes. ForeAvings marked as in $ of X. catori (1 a), Avith the black costal border widening towards 
the base and adorned Avith 3 bluish-Avhite or yellowish spots; before the middle one or two black spots, the 
loAver one occasionally continued along the internal vein to the black termen. From Cameroon to Lake Tanga- 
zenkeri. nyika. — Of zenkeri Karsch we know three forms in Cameroon: f. zenkeri Karscli *), of which only one $ (in 
the Berlin Museum) seems to be knoAvn, has but a black antemedian spot in the cell; the black discal band 
flaviventris. is narroAv as in all $$ from Cameroon, and does not reach the black costal border. f. flaviventris form. nov. 
(2 b as zenkeri). Abdomen of $ above and at the sides clear yellow, occasionally mottled Avith black (our 
figure is too dark); at the sides a row of black dots, beneath black Avith more or less faint yelloAv cross-bands 
flanking each segment. ForeAvings as in /. zenkeri, but more ochreous, Avith the black discal band often visible 
only at the apex of the cell; hindAvings yellow or orange. The A which was figured by Hamp son from a speci¬ 
men in the Staitdinger collection, has on the fore wing the black discal band broad and not separated from 
nigriventris. the costal margin, the hindAving reddish-orange, abdomen orange wi+h black tip. The third form f. nigriventris 
form, nov., of Avhich only a $ is available, agrees exactly with the $ of flaviventris, but has the abdomen 
zeodiia. black Avith a slight admixture of yellow and yelloAv tip. — zeodita Niep. (= ochracea Auriv.) has on the 
forewing tAvo black antemedian spots. Congo Region, f. zeodita Niep. (1 a as zenkeri) has the abdomen 
black, Avith or Avithout admixture of yelloAv, in the $ tipped Avith yelloAv; the Avings coloured as in f. zenkeri, 
f. yiigriventris and f. flaviventris, but in the $ the black discal band broader and confluent Avith the black 
costal margin; in typical specimens the black border of the foreAvings extends from the inner angle along the 
ochracea. internal vein to near the loAver black antemedian spot. f. ochracea Auriv. nec Btlr. Like the preceding, 
but Avith the abdomen yelloAv (also beneath?); the name ochracea Auriv. 1901 cannot be used for the Congo 
*) The figure marked on PI. 2b zenkeri is not a typical zenkeri, but the form flavwentris-, fig. la refers to zeo¬ 
dita Niep. 
