226 C. B. HARDENBERG. 



parent. It is distinguished by its small size (Monda major 

 measures 16 mm., M. rogenliof f eri 14 mm.), and by the 

 uniform grey diifusion. M. major is entirely white; M. 

 rogenliof f eri has a smaller diffusion, and M. delicatissima 

 has two black spots on the fore wings. 



The species has been described from the male moth only ; 

 the immature stages and female are unknown. 



Junod gives the following description of the bag (text-fig. 

 25, A-c) : 



" Mais ce qu'il y a de pins caracteristiqiie dans cette espece minuscule, 

 c'est son fourreau. II est cylindrique, a 8 mm. de long et est tout 

 herisse de tres petits polls ressemblant a de courts cheveux brun-gi-is 

 pris evidemment a des epillets de graminees. Les petites chenilles, en 

 sortant du fourreau au fond duquel la mere a depose ses ceiifs, tondent 

 probablement ces involucres, y enlevent tous les polls, car on les 

 retvouve absolument nus quelque temps apres. 



" J'ai decouvert cette espece dans la depression actuellement envahie 

 par le lac de Rikatla." 



EXPLANATION OF PLATE XIII, 



Illustrating Mr. C. B. Hardenberg's paper, " South African 

 Bagworms," Part II. 



Acantbopsyche tristis Janse. 



Fig. I. — Nat size. The lai'ger bag is covered with grass, while the 

 smaller bag on the right is attached to Acacia sp. and has some of the 

 leaves fixed to the bag. 



Figs. 2, 3. — Nat. size. Bags covered with pieces of grass. 



Figs. 4, 5. — Nat. size. Bags provided with many wattle leaves. 



Fig. 6. — Nat. size. The inner silk bag is exposed owing to the pieces 

 of grass being worn away. 



Fig. 7. — Nat. size. Male moth. 



Acanthopsyche alba Janse. 

 Fig. 8. — Nat. size. 



