Henry. — On Hereditary Knoiolcdge. 51 



EXPLANATION OF PLATES III. AND IV. 



Plate III. 



Fig. 1. Dolichopeza atropos, wing. 



Fjg. 2. Pachyrhina hudsoni, a, wing; 6, antenna; c, male foroeps from 



above ; cl, male forceps from below. 



Fig. 3. Tipula fulva, vfing. 



Fig. 4. Tipula viridis, a, wing ; 5, antenna. 



Fig. 5. Tipula obscuripennis, wing. 



Fig. 6. Tipula dux, wing. 



Fig. 7. Macromastix hinotata, wing. 



Fig. 8. Dicranomyia monilicornis, wing. 



Fig. 9. Geranornyia annulipes, a, wing ; b, rostrum. 



Fig. 10. Trochobola ampla, wing. 



Fig. 11. Trochobola picta, wing. 



Plate IV. 



Pig. 12. Rliampliidia levis, a, wing ; b, antenna. 



Fig. 13. Gnophomyia riifa, wing. 



Fig. 14. Limnophila siyiistra, wing. 



Fig. 15. Limnophila crassipes, wing. 



Fig. 16. Limnophila marsJialli, wing. 



Fig. 17. Tinemyia margaritifera, a, wing ; b, tip of rostrum. 



Fig. 18. Gynoplistia Quprea, wing. 



Pig. 19. Gynoplistia fulgens, wing. 



Pig. 20. Cerozodia plumosa, wing. 



Fig. 21. Tanyderus annuliferus, a, head and thorax ; b, head, side view ; 



c, antenna ; d, anal styles of female ; e, forceps of male. 

 Pig. 22. Tanyderus forcipatus, wing. 



Art. X. — On Hereditary Knoivledge. 



By Richard Henry. 



Communicated by Sir James Hector. 



[Read before the Wellington Philosophical Society, 11th July, 1899.'] 



I REMEMBER reading about the young swallows taking their 

 flight from England when they had been only a few days on 

 the wing ; and, when we know nothing to the contrary, we 

 are likely to assume that their parents led them away and 

 taught them the geography of the country they were going to. 

 But I have seen young "shining cuckoos" at Te Anau as 

 late as April, apparently alone and quite happy, though 

 they had a thousand-mile flight before them immediately, if 

 they wished to survive ; and no one to show them the way, 

 for it is probable that a young cuckoo never sees its mother 

 except by accident. 



As far as our knowledge goes, the cuckoos leave their eggs 

 and young entirely to foster-parents, who ai'e not likely to teach 



