160 U. B. HARDENBERG. 



appearing on November 25th. We collected on August 21st 

 a more tlian half-grown larva ; it fed up to the latter part of 

 Novembei% and the imago appeared in January. We can thus 

 safely assume that there is only one generation in a year, and 

 the moths appear throughout the summer. 



At present the species is of no economic importance. We 

 have observed only a few specimens, and have not noticed any 

 serious damage arising from their presence. The species is 

 small and of slow growth, and therefore the plant would have 

 a chance to out-grow any injury due to loss of foliage, unless 

 the bao'worms occurred in oreat numbers. 



From the half-dozen specimens or so which we have had an 

 opportunity to breed no parasites have been obtained. 



3. Acanthopsy die alba Janse. PI. XIII, fig. 8. 



Acanthopsyclie (Metisa) alba J««se. Ann. Natal Mus., 1917, vol. 

 iii, pt. 3, p. 598. 



This species is of about the same size as the Wattle Bag- 

 worm, A. junodi, Heylaerts. It has not yet been found in 

 numbers in the Wattle plantations inland. While not entirely 

 confined to the coast, since we have found it as far inland as 

 Pietermaritzburg, it seems to thrive better in the coastal area. 

 There it may be found locally common at times on the thorn 

 trees ; but it has very seldom been bred or captured, and it 

 was described only last year by Janse from a male specimen 

 obtained at Nkwaleni, Zululand. The species is very difficult 

 to rear, for even in the later stages, when most of the other 

 bagworm species are not so very particular about the kind of 

 food which is offered to them, this insect objects strongly to 

 any change, and refuses to eat even when transferi'ed from the 

 common thorn tree (Acacia sp.) to a tree so nearly related 

 as the Black Wattle (Acacia mollissima). Out of some 

 fifty specimens collected in a later stage of larval life, not a 

 single one reached maturity. Mr. E. E. Piatt, of Durban, 

 succeeded m rearing a few males from a similar lot. 



The various stages of the larval life of this bagworm are 



