CENTIPEDE AND INSECT 



39 



the carriage and protection of the eggs, or, in hermit 

 crabs, for grasping shells. 



In insects we find a great variety of modes of 

 motion. Their larvae, terrestrial or aquatic, recall 



FIG. 6. Illustrating the common starting-point of both Centipedes, or 

 many-legged air-breathing animals, and of the insects with six legs. 

 A. A Common Garden Centipede (Lithobins : from Koch's ' Myria- 

 poden '). B. Scolopendrella, the connecting link between A and C. 

 (Ajter Lang. ) c. A primitive Insect (Machilis) found under stones and 

 on the seashore. It shows the typical six-legged condition, but traces of 

 the abdominal feet are shown by the minute spines.-- (After Otidemans.) 



