PENTILA. By Dr. C. Aueivillius 
torrid 
tacky reticles, 
roidcsla. 
piccna. 
bitje. 
alba. 
glcKjoessa. 
310 
P. tonida Ky. (61 h) has white wings with black marginal dots and median dots, and besides no 
markings or only one basal dot each (in the cell of the forewing and in the area 7 of the hindwing); forewing 
above with a black apical spot of about 3 mm width, ending at vein. Gabon to the Kudu River. 
P. tachyroides Dew. (61 h. i) has white wings with black marginal dots united on the forewing above 
to an apical spot between the costal margin and vein 4; no other markings. Cameroon to Angola. — In ab. 
roidesta Stiff, also the dark apical band of the forewing above is absent and is replaced by separate or almost 
separate marginal spots. North Cameroon. 
P. picena Hew. Wings yellowish-white with a large, black median dot; forewing in the middle and 
at the posterior margin almost purely white, above with a black costal margin and a broad black apical spot 
reaching vein 4; both wings without any marginal dots or other black markings. Ashanti. 
P. bitje Ham. Druce (63c). Wings white, beneath finely speckled or striated dark; forewing above 
at the base of the costal margin yellowish and with a small, narrow, black apical spot between the veins 6 
and 9; hindwings beneath yellowish; both wings with a median dot and 2 basal dots (in the area 2 and 
in the cell of the forewing; in the areas 2 and 7 of the hindwing); otherwise without any black dots or spots. 
Cameroon. 
P. alba Dew. Wings on both sides of a purely white ground-colour without striae; forewing above 
at the apex only very little darkened; both wings with a small black median dot and besides only with one 
basal dot situate in the cell of the forewing and in the area 7 of the hindwing. Congo District: Mukenge. 
P. glag oessa Holl. Wings purely white, at the base somewhat yellowish, with a black median dot, 
but without any other marking. Ogowe Valley. 
T li i r d G r o up of Specie s. 
The species belonging hereto were formerly wrongly placed to Larinopoda or Liptena, with which they 
correspond only in their exterior by the colouring and marking, but not in the neuration. The wings are some¬ 
what shorter and broader than in the species of the third group from which they differ by the absence of the 
marginal, submarginal and discal dots, and of a separate median dot of the forewing. The black marginal bands 
above occur similarly also beneath, which is never the case in the species of the preceding group. Ground¬ 
colour always white. 
R e v i e w of the Species. 
A. Hindwing with a large, separate, black median dot on the transverse vein of the discocellular. Costal margin 
of the forewing and border of both wings more or less broad black. 
■j.. Forewing across the apex of the cell with a broad black transverse band connecting the costal margin 
with the border and dividing the white ground-colour into two large spots. Large species, 40 to 50 mm. 
P. peucetia. 
[i. Forewing without this transverse band. Smaller species with an expanse of wings of 28 to 34 mm. 
*. The costal margin of the forewing is broadly black and forms a spot or a dentiform projection at 
the end of the discocellular. The black marginal band of both wings is 2—3 mm broad. 
1. The black spot, cohering with the costal margin at the apex of the discocellular of the forewing, 
is large and rounded off. and reaches the posterior angle of the discocellular (vein 4). The dark 
costalmarginal stripe does not extend or scarcely extends into the discocellular. P. Jcirbyi. 
2. The dark costal-marginal stripe of the forewing extends far into the cell and forms at the apex 
of the cell a small projection which, however, does not extend beyond the middle of the lower 
discocellular vein. P. muhata. 
**. The costal margin of the forewing is only narrow ly black and does not form a spot at the apex of 
the cell. Marginal band of both wings very narrow. P. sylphida. 
P. perfragilis. 
B. Hindwing without a median dot. Both wings without any basal dots, 
a. Costal margin and border of the forewing more or less broadly black. 
*. The dark costal-marginal stripe of the forewing reaches the discocellular and forms at its end a 
transverse spot reaching at least the middle of the lower discocellular vein. The apex and border 
