370 SOUTH-AFRICAN BUTTERFLIES. 



Length |- inch ; greatest width (across base of abdomen and wing- 

 covers) ^ inch. 



(Described from a King "William's Town example sent to me by 

 Mr. Mansel Weale, from which the imago emerged on 24th March 



1873.) 



I have also reared a ^ imago from a similar pupa received from 

 Colonel Bowker (D'Urban, Natal) in March 1S81. 



Plate II. fig. 6a. 



Mr. "Weale wrote in 1873 that his Rohinia trees at Erooklyn, near King 

 William's Town, were covered with the larvae of Forestall, which completely- 

 riddled the clusters of leaves within Avhich they fed. 



This welbknown species appears to range throughout the Ethiopian Region. 

 Its closest ally, which accompanies it in Madagascar and Reunion, is Arhogastes, 

 Guen, { = Margarita, Butl.),^ hut it is also very nearly related to Fisistratus, 

 Fab., which has a similarly wide continental distribution, but does not seem to 

 occur in Madagascar or the Mascarene Islands. In South Africa it inhabits 

 only the eastern side, not having, to my knowledge, been taken westward of 

 Port Elizabeth, and is commoner on the Natal coast than elsewhere. In 

 January and February 1867 I took a good many examples about D'Urban; 

 and also met with the species in Mauritius in July 1865, and near Grahams- 

 town in February 1870. Its flight is very swift, but hzistling, reminding one 

 of that of the Flusice and other diurnal members of the Noctuje tribe ; it keeps 

 steadily to flowers (in Natal preferring the cultivated Lantana), appearing both 

 in the heat of the day and a little after sunset. The wings are elevated wdien 

 the insect is settled, the hind-wings being held slightly apart from the fore- 

 Aviugs. 



Localities of Hcspcria Forestan. 



I. South Africa. 

 B. Cape Colony. 



h. Eastern Districts. — "Port Elizabeth." — S. D. Bairstow. Grahams- 

 town. King William's Town {J. P. Mansel Weale). 



D. Kaffraria Proper. — Bashee River (J. II. Bowker). 



E. Natal. 



a. Coast Districts. — D'Urban. 



h. Upper Districts. — Estcourt (J. M. Hiitchinson). 



F. Zululand.— Etshowe {A. M. Goodrich and T. Vachell). 

 K. Transvaal, — Barberton, De Kaap (C. F. Palmer). 



II. Other African Regions. 

 A. South Tropical. 



a. Western Coast. — Damaraland (J. A. Bell). "Angola (Pogge)." — 



Dewitz. 

 ai. Western Interior. — Otiembora (A. W. Eriksso7i). 

 h. Eastern Coast. — " Querimba (Peters)." — Hopffer. 

 hb. Eastern Islands. — " Madagascar." — Saalmliller. " Reunion." — 

 Guende. Mauritius. 



^ Figured in Grandidier, Hist. Madag., xix. Atlas, pi. 51, ff. 5, 5a (1SS5), and distin- 

 guished by its sub-metallic greenish-grey basal sufiFusion on the upper side (shading off into 

 hoary-grey in hind-wings), and inferiorly mucli narrower white band on the under side of 

 the hind-wings. 



