252 Transactions. — Zoology. 



Fig. 

 Fig. 9. 

 Fig. 10. 

 Fig. 11. 



Fig. 6. Eipcrsia leptospermi, female of second stage. 

 Fig. 7. Ccelostoma rubiginosum, insects on twig. 



antenna of female, 

 foot of female. 



epidermis, showing waxy processes, 

 epidermis after treatment with potash. 

 Fig. 12. Monophlcbus craivfordi, type, adult female. 



type, epidermis, 

 type, foot. 



var. levis, adult female. 

 „ epidermis. 

 „ foot, 

 var. pilosior, adult female, 

 epidermis. 



Fig. 13. 

 Fig. 14. 

 Fig. 15. 

 Fig. 16. 

 Fig. 17. 

 Fig. 18. 

 Fig. 19. 



Fig. 20. „ „ foot. 



'o 



Plate XVIII. 



Fig. 1. Monophlcbus fuscus, adult female. 



Fig. 2. „ antenna of female. 



Fig. 3. „ foot of female. 



Fig. 4. „ larva, dorsal view. 



Fig. 5. Iccrya kocbclei, insects on twig. 



Fig. 6. „ female, enlarged. 



Fig. 7. „ apex of dorsum, side view. 



Fig. 8. „ antenna of female. 



Fig. 9. „ foot of female. 



Fig. 10. „ antenna of larva. 



Fig. 11. „ abdominal extremity of larva. 



Fig. 12. Cartcria dccorclla, adult females in tests on twig. 



Fig. 13. „ tests of second-stage females and males on 



twig. 



Fig. 14. „ tests of adult females. 



Fig. 15. „ tests of second-stage females. 



Fig. 16. „ test of male. 



Fig. 17. „ adult female, dorsal view. 



Fig. 18. „ lac-tube of female. 



'.-,• 



Fig. 19. „ adult male. 



Fig. 20. „ antenna of male. 



Akt. XXVII. — On the Geographical Distribution of Atax. 



By Dr. H. v. Jhering, Eio Grande do Sul, Brazil. 



Communicated by G. M. Thomson, F.L.S. 



[Read before the Otago Institute, 12th July, 1892.] 



Engaged as I have been upon the study of the Unionidcz, I 

 have endeavoured to obtain Australian and New Zealand 

 species, and in particular to secure examples containing the 

 animals. Up to the present time I have only been able 

 (thanks to the kindness of Professor Hutton) to obtain speci- 

 mens of one species — TJnio menzicsii, Gray — containing the 



