520 Arthur E. Shipley, On the Structure and Development of Argiope. 



The second segment is beginning to grow down over the third, it bears 

 at its edge a Cluster of cells which scerete the bristles. 



Fig. 34. A transverse sectionthroughasoniewhatlater stage, this is cut somewhat 

 obìiquely. Above the fold of epiblast formi ng the second segment isseen. 

 The aìimentary canal lying near the dorsal wall, the bristle-forming cells, 

 and some muscle fibres are also shown. 



Fig. 35. A longitudinal section through a free swimming larva. Here the anterior 

 segment is much coustricted off from the others, posteriorly a portion is 

 also separated off to form the future peduncle, muscles run from this to 

 the base of the fold formed by the second segment, and some fibres pass 

 to the bristles. 



