Nogle Bemærkninger om Insekternes Metamorphose. 291 



sekterne i Imagoformen M. Med Rette imødegaar han Lubbocks 

 Bemærkning, at insekternes Metamorphose skulde begrundes 

 i Æggets Lidenhed. I det hele maa jeg sige, at skønt ogsaa 

 Mialis Artikel rummer nogen Uklarhed, indeholder den dog 

 næst Fr. Mullers « Facts und Arguments » de bedste almindelige 

 Bemærkninger, der hidtil er gjorte om Insekternes Meta- 

 morphose. 



"Every animal and every plant has these two functions (among otliers) 

 to fulfil. It must feed and grow; it must also separate from its fellows, 

 and find out an unoccupied site. The two functions mav be dischar- 

 ged together. Birds, for instance, feed all round the year, and change 

 their abode whenever they sulfer from overcrowding or scarcity of food. 

 In other cases, elther fiinction may for special reasons be limited to a 

 particular time of life. The crustacean cannot migrate efiectively when 

 adult, because of the heavy armour which it carries. The insect can- 

 not migrate effectively when young, because of the difiiculty of travel 

 by land ....■• (I. c. p. 1.53 — 154). 



Tavleforklaring. 



Tab. IV. 



Pi/rrhocoris apterus, Fig. 1—3 Larver af forskellig Alder, 4 Imago. 

 Alle forst, omtrent lige meget (G — S Gange). 



19 



