630 ON SOME PAUROPODA FROM N. S. WALES, 



reached. This undivided area certainly includes two segments, the 

 pre-anal and that of the sixth legs. Possibly another segment is 

 represented between these, but, provisionally, the number of body- 

 segments may be set down as nine. 



One individual, observed alive within a day of moulting, showed 

 the antennae and hairs of the next stage through the cuticle. The 

 basal segments of the antennae were filled with the flagella of the 

 new antennae. The clavate hairs of the head, for the new stage, 

 were behind those of the old. The new hairs of the first four 

 shields directly underlay the old. In the fifth shield, however, the 

 new hairs of the first row were well in front of the old, and of the 

 second row slightly in front. 



I had hoped, by means of this individual, to prove definitely 

 that no stage with fourteen legs occurred. But, although it moulted 

 successful!}^ a day after the above observations were made, it was, 

 unfortunately, so badly crushed between two pieces of bark in 

 removing it from the tube, that the number of legs could not be 

 made out. From observation on very plentiful material, in which 

 all the other stages are represented by many individuals, I am 

 quite satisfied that no such stage does occur; and a careful exami- 

 nation, under a strong lens, of many more specimens in the field, 

 has failed to produce it. 



The sixteen-legged larva ranges in length from a little under 1 

 mm. up to 1-3 mm. The antenna has four basal joints, and its rami 

 and flagella have assumed the adult proportions. The genital aper- 

 ture is present in the female ; and the penes in the male. There are 

 five dorsal shields, and four pairs of tactile setae, as in the previous 

 stage ; but the tergite of the anal segment is much larger and more 

 prominent. Ventrally, there are eleven distinct segments plainly 

 visible. Of these, the first eight are covered by the fii'st four dorsal 

 shields; the ninth and part of the tenth underlie the fifth; while 

 part of the tenth seems definitely to underlie the tergite of the 

 anal segment. In other respects, this stage does not differ from the 

 adult. 



